diff --git a/Cargo.lock b/Cargo.lock
index eee9af2..35d3c25 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -48,10 +48,55 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
 [[package]]
-name = "once_cell"
-version = "1.16.0"
+name = "phf"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86f0b0d4bf799edbc74508c1e8bf170ff5f41238e5f8225603ca7caaae2b7860"
+checksum = "928c6535de93548188ef63bb7c4036bd415cd8f36ad25af44b9789b2ee72a48c"
+dependencies = [
+ "phf_macros",
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_generator"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1181c94580fa345f50f19d738aaa39c0ed30a600d95cb2d3e23f94266f14fbf"
+dependencies = [
+ "phf_shared",
+ "rand",
+]
+
+[[package]]
+name = "phf_macros"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92aacdc5f16768709a569e913f7451034034178b05bdc8acda226659a3dccc66"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1fb5f6f826b772a8d4c0394209441e7d37cbbb967ae9c7e0e8134365c9ee676"
+dependencies = [
+ "siphasher",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ea3d908b0e36316caf9e9e2c4625cdde190a7e6f440d794667ed17a1855e725"
+dependencies = [
+ "unicode-ident",
+]
 
 [[package]]
 name = "qrcode"
@@ -62,6 +107,24 @@ dependencies = [
  "checked_int_cast",
 ]
 
+[[package]]
+name = "quote"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "rand_core",
+]
+
 [[package]]
 name = "rand_core"
 version = "0.6.3"
@@ -93,6 +156,29 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "siphasher"
+version = "0.3.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7bd3e3206899af3f8b12af284fafc038cc1dc2b41d1b89dd17297221c5d225de"
+
+[[package]]
+name = "syn"
+version = "1.0.105"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60b9b43d45702de4c839cb9b51d9f529c5dd26a4aff255b42b1ebc03e88ee908"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"
+
 [[package]]
 name = "ur"
 version = "0.2.0"
@@ -101,7 +187,7 @@ dependencies = [
  "bitcoin_hashes",
  "crc",
  "hex",
- "once_cell",
+ "phf",
  "qrcode",
  "rand_xoshiro",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index c346913..7880864 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ anyhow = "1.0.64"
 bitcoin_hashes = "0.11.0"
 crc = "3.0.0"
 hex = "0.4.3"
-once_cell = "1.16.0"
+phf = { version = "0.11.1", features = ["macros"], default-features = false }
 rand_xoshiro = "0.6.0"
 serde = "1.0.147"
 serde_cbor = { version = "0.11.2", features = ["tags"] }
diff --git a/src/bytewords.rs b/src/bytewords.rs
index d757ff3..571b682 100644
--- a/src/bytewords.rs
+++ b/src/bytewords.rs
@@ -111,7 +111,7 @@ fn decode_minimal(encoded: &str) -> Result<Vec<u8>, Error> {
 
 fn decode_from_index(
     keys: &mut dyn Iterator<Item = &str>,
-    indexes: &std::collections::HashMap<&'static str, u8>,
+    indexes: &phf::Map<&'static str, u8>,
 ) -> Result<Vec<u8>, Error> {
     strip_checksum(
         &keys
diff --git a/src/constants.rs b/src/constants.rs
index 69e0c10..9bb9eac 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -1,3 +1,5 @@
+use phf::phf_map;
+
 #[rustfmt::skip]
 pub(crate) const WORDS: [&str; 256] = [
     "able", "acid", "also", "apex", "aqua", "arch", "atom", "aunt",
@@ -34,270 +36,264 @@ pub(crate) const WORDS: [&str; 256] = [
     "yoga", "yurt", "zaps", "zero", "zest", "zinc", "zone", "zoom",
 ];
 
-pub(crate) static WORD_IDXS: once_cell::sync::Lazy<std::collections::HashMap<&'static str, u8>> =
-    once_cell::sync::Lazy::new(|| {
-        [
-            ("able", 0),
-            ("acid", 1),
-            ("also", 2),
-            ("apex", 3),
-            ("aqua", 4),
-            ("arch", 5),
-            ("atom", 6),
-            ("aunt", 7),
-            ("away", 8),
-            ("axis", 9),
-            ("back", 10),
-            ("bald", 11),
-            ("barn", 12),
-            ("belt", 13),
-            ("beta", 14),
-            ("bias", 15),
-            ("blue", 16),
-            ("body", 17),
-            ("brag", 18),
-            ("brew", 19),
-            ("bulb", 20),
-            ("buzz", 21),
-            ("calm", 22),
-            ("cash", 23),
-            ("cats", 24),
-            ("chef", 25),
-            ("city", 26),
-            ("claw", 27),
-            ("code", 28),
-            ("cola", 29),
-            ("cook", 30),
-            ("cost", 31),
-            ("crux", 32),
-            ("curl", 33),
-            ("cusp", 34),
-            ("cyan", 35),
-            ("dark", 36),
-            ("data", 37),
-            ("days", 38),
-            ("deli", 39),
-            ("dice", 40),
-            ("diet", 41),
-            ("door", 42),
-            ("down", 43),
-            ("draw", 44),
-            ("drop", 45),
-            ("drum", 46),
-            ("dull", 47),
-            ("duty", 48),
-            ("each", 49),
-            ("easy", 50),
-            ("echo", 51),
-            ("edge", 52),
-            ("epic", 53),
-            ("even", 54),
-            ("exam", 55),
-            ("exit", 56),
-            ("eyes", 57),
-            ("fact", 58),
-            ("fair", 59),
-            ("fern", 60),
-            ("figs", 61),
-            ("film", 62),
-            ("fish", 63),
-            ("fizz", 64),
-            ("flap", 65),
-            ("flew", 66),
-            ("flux", 67),
-            ("foxy", 68),
-            ("free", 69),
-            ("frog", 70),
-            ("fuel", 71),
-            ("fund", 72),
-            ("gala", 73),
-            ("game", 74),
-            ("gear", 75),
-            ("gems", 76),
-            ("gift", 77),
-            ("girl", 78),
-            ("glow", 79),
-            ("good", 80),
-            ("gray", 81),
-            ("grim", 82),
-            ("guru", 83),
-            ("gush", 84),
-            ("gyro", 85),
-            ("half", 86),
-            ("hang", 87),
-            ("hard", 88),
-            ("hawk", 89),
-            ("heat", 90),
-            ("help", 91),
-            ("high", 92),
-            ("hill", 93),
-            ("holy", 94),
-            ("hope", 95),
-            ("horn", 96),
-            ("huts", 97),
-            ("iced", 98),
-            ("idea", 99),
-            ("idle", 100),
-            ("inch", 101),
-            ("inky", 102),
-            ("into", 103),
-            ("iris", 104),
-            ("iron", 105),
-            ("item", 106),
-            ("jade", 107),
-            ("jazz", 108),
-            ("join", 109),
-            ("jolt", 110),
-            ("jowl", 111),
-            ("judo", 112),
-            ("jugs", 113),
-            ("jump", 114),
-            ("junk", 115),
-            ("jury", 116),
-            ("keep", 117),
-            ("keno", 118),
-            ("kept", 119),
-            ("keys", 120),
-            ("kick", 121),
-            ("kiln", 122),
-            ("king", 123),
-            ("kite", 124),
-            ("kiwi", 125),
-            ("knob", 126),
-            ("lamb", 127),
-            ("lava", 128),
-            ("lazy", 129),
-            ("leaf", 130),
-            ("legs", 131),
-            ("liar", 132),
-            ("limp", 133),
-            ("lion", 134),
-            ("list", 135),
-            ("logo", 136),
-            ("loud", 137),
-            ("love", 138),
-            ("luau", 139),
-            ("luck", 140),
-            ("lung", 141),
-            ("main", 142),
-            ("many", 143),
-            ("math", 144),
-            ("maze", 145),
-            ("memo", 146),
-            ("menu", 147),
-            ("meow", 148),
-            ("mild", 149),
-            ("mint", 150),
-            ("miss", 151),
-            ("monk", 152),
-            ("nail", 153),
-            ("navy", 154),
-            ("need", 155),
-            ("news", 156),
-            ("next", 157),
-            ("noon", 158),
-            ("note", 159),
-            ("numb", 160),
-            ("obey", 161),
-            ("oboe", 162),
-            ("omit", 163),
-            ("onyx", 164),
-            ("open", 165),
-            ("oval", 166),
-            ("owls", 167),
-            ("paid", 168),
-            ("part", 169),
-            ("peck", 170),
-            ("play", 171),
-            ("plus", 172),
-            ("poem", 173),
-            ("pool", 174),
-            ("pose", 175),
-            ("puff", 176),
-            ("puma", 177),
-            ("purr", 178),
-            ("quad", 179),
-            ("quiz", 180),
-            ("race", 181),
-            ("ramp", 182),
-            ("real", 183),
-            ("redo", 184),
-            ("rich", 185),
-            ("road", 186),
-            ("rock", 187),
-            ("roof", 188),
-            ("ruby", 189),
-            ("ruin", 190),
-            ("runs", 191),
-            ("rust", 192),
-            ("safe", 193),
-            ("saga", 194),
-            ("scar", 195),
-            ("sets", 196),
-            ("silk", 197),
-            ("skew", 198),
-            ("slot", 199),
-            ("soap", 200),
-            ("solo", 201),
-            ("song", 202),
-            ("stub", 203),
-            ("surf", 204),
-            ("swan", 205),
-            ("taco", 206),
-            ("task", 207),
-            ("taxi", 208),
-            ("tent", 209),
-            ("tied", 210),
-            ("time", 211),
-            ("tiny", 212),
-            ("toil", 213),
-            ("tomb", 214),
-            ("toys", 215),
-            ("trip", 216),
-            ("tuna", 217),
-            ("twin", 218),
-            ("ugly", 219),
-            ("undo", 220),
-            ("unit", 221),
-            ("urge", 222),
-            ("user", 223),
-            ("vast", 224),
-            ("very", 225),
-            ("veto", 226),
-            ("vial", 227),
-            ("vibe", 228),
-            ("view", 229),
-            ("visa", 230),
-            ("void", 231),
-            ("vows", 232),
-            ("wall", 233),
-            ("wand", 234),
-            ("warm", 235),
-            ("wasp", 236),
-            ("wave", 237),
-            ("waxy", 238),
-            ("webs", 239),
-            ("what", 240),
-            ("when", 241),
-            ("whiz", 242),
-            ("wolf", 243),
-            ("work", 244),
-            ("yank", 245),
-            ("yawn", 246),
-            ("yell", 247),
-            ("yoga", 248),
-            ("yurt", 249),
-            ("zaps", 250),
-            ("zero", 251),
-            ("zest", 252),
-            ("zinc", 253),
-            ("zone", 254),
-            ("zoom", 255),
-        ]
-        .iter()
-        .copied()
-        .collect()
-    });
+pub(crate) static WORD_IDXS: phf::Map<&'static str, u8> = phf_map! {
+    "able" => 0,
+    "acid" => 1,
+    "also" => 2,
+    "apex" => 3,
+    "aqua" => 4,
+    "arch" => 5,
+    "atom" => 6,
+    "aunt" => 7,
+    "away" => 8,
+    "axis" => 9,
+    "back" => 10,
+    "bald" => 11,
+    "barn" => 12,
+    "belt" => 13,
+    "beta" => 14,
+    "bias" => 15,
+    "blue" => 16,
+    "body" => 17,
+    "brag" => 18,
+    "brew" => 19,
+    "bulb" => 20,
+    "buzz" => 21,
+    "calm" => 22,
+    "cash" => 23,
+    "cats" => 24,
+    "chef" => 25,
+    "city" => 26,
+    "claw" => 27,
+    "code" => 28,
+    "cola" => 29,
+    "cook" => 30,
+    "cost" => 31,
+    "crux" => 32,
+    "curl" => 33,
+    "cusp" => 34,
+    "cyan" => 35,
+    "dark" => 36,
+    "data" => 37,
+    "days" => 38,
+    "deli" => 39,
+    "dice" => 40,
+    "diet" => 41,
+    "door" => 42,
+    "down" => 43,
+    "draw" => 44,
+    "drop" => 45,
+    "drum" => 46,
+    "dull" => 47,
+    "duty" => 48,
+    "each" => 49,
+    "easy" => 50,
+    "echo" => 51,
+    "edge" => 52,
+    "epic" => 53,
+    "even" => 54,
+    "exam" => 55,
+    "exit" => 56,
+    "eyes" => 57,
+    "fact" => 58,
+    "fair" => 59,
+    "fern" => 60,
+    "figs" => 61,
+    "film" => 62,
+    "fish" => 63,
+    "fizz" => 64,
+    "flap" => 65,
+    "flew" => 66,
+    "flux" => 67,
+    "foxy" => 68,
+    "free" => 69,
+    "frog" => 70,
+    "fuel" => 71,
+    "fund" => 72,
+    "gala" => 73,
+    "game" => 74,
+    "gear" => 75,
+    "gems" => 76,
+    "gift" => 77,
+    "girl" => 78,
+    "glow" => 79,
+    "good" => 80,
+    "gray" => 81,
+    "grim" => 82,
+    "guru" => 83,
+    "gush" => 84,
+    "gyro" => 85,
+    "half" => 86,
+    "hang" => 87,
+    "hard" => 88,
+    "hawk" => 89,
+    "heat" => 90,
+    "help" => 91,
+    "high" => 92,
+    "hill" => 93,
+    "holy" => 94,
+    "hope" => 95,
+    "horn" => 96,
+    "huts" => 97,
+    "iced" => 98,
+    "idea" => 99,
+    "idle" => 100,
+    "inch" => 101,
+    "inky" => 102,
+    "into" => 103,
+    "iris" => 104,
+    "iron" => 105,
+    "item" => 106,
+    "jade" => 107,
+    "jazz" => 108,
+    "join" => 109,
+    "jolt" => 110,
+    "jowl" => 111,
+    "judo" => 112,
+    "jugs" => 113,
+    "jump" => 114,
+    "junk" => 115,
+    "jury" => 116,
+    "keep" => 117,
+    "keno" => 118,
+    "kept" => 119,
+    "keys" => 120,
+    "kick" => 121,
+    "kiln" => 122,
+    "king" => 123,
+    "kite" => 124,
+    "kiwi" => 125,
+    "knob" => 126,
+    "lamb" => 127,
+    "lava" => 128,
+    "lazy" => 129,
+    "leaf" => 130,
+    "legs" => 131,
+    "liar" => 132,
+    "limp" => 133,
+    "lion" => 134,
+    "list" => 135,
+    "logo" => 136,
+    "loud" => 137,
+    "love" => 138,
+    "luau" => 139,
+    "luck" => 140,
+    "lung" => 141,
+    "main" => 142,
+    "many" => 143,
+    "math" => 144,
+    "maze" => 145,
+    "memo" => 146,
+    "menu" => 147,
+    "meow" => 148,
+    "mild" => 149,
+    "mint" => 150,
+    "miss" => 151,
+    "monk" => 152,
+    "nail" => 153,
+    "navy" => 154,
+    "need" => 155,
+    "news" => 156,
+    "next" => 157,
+    "noon" => 158,
+    "note" => 159,
+    "numb" => 160,
+    "obey" => 161,
+    "oboe" => 162,
+    "omit" => 163,
+    "onyx" => 164,
+    "open" => 165,
+    "oval" => 166,
+    "owls" => 167,
+    "paid" => 168,
+    "part" => 169,
+    "peck" => 170,
+    "play" => 171,
+    "plus" => 172,
+    "poem" => 173,
+    "pool" => 174,
+    "pose" => 175,
+    "puff" => 176,
+    "puma" => 177,
+    "purr" => 178,
+    "quad" => 179,
+    "quiz" => 180,
+    "race" => 181,
+    "ramp" => 182,
+    "real" => 183,
+    "redo" => 184,
+    "rich" => 185,
+    "road" => 186,
+    "rock" => 187,
+    "roof" => 188,
+    "ruby" => 189,
+    "ruin" => 190,
+    "runs" => 191,
+    "rust" => 192,
+    "safe" => 193,
+    "saga" => 194,
+    "scar" => 195,
+    "sets" => 196,
+    "silk" => 197,
+    "skew" => 198,
+    "slot" => 199,
+    "soap" => 200,
+    "solo" => 201,
+    "song" => 202,
+    "stub" => 203,
+    "surf" => 204,
+    "swan" => 205,
+    "taco" => 206,
+    "task" => 207,
+    "taxi" => 208,
+    "tent" => 209,
+    "tied" => 210,
+    "time" => 211,
+    "tiny" => 212,
+    "toil" => 213,
+    "tomb" => 214,
+    "toys" => 215,
+    "trip" => 216,
+    "tuna" => 217,
+    "twin" => 218,
+    "ugly" => 219,
+    "undo" => 220,
+    "unit" => 221,
+    "urge" => 222,
+    "user" => 223,
+    "vast" => 224,
+    "very" => 225,
+    "veto" => 226,
+    "vial" => 227,
+    "vibe" => 228,
+    "view" => 229,
+    "visa" => 230,
+    "void" => 231,
+    "vows" => 232,
+    "wall" => 233,
+    "wand" => 234,
+    "warm" => 235,
+    "wasp" => 236,
+    "wave" => 237,
+    "waxy" => 238,
+    "webs" => 239,
+    "what" => 240,
+    "when" => 241,
+    "whiz" => 242,
+    "wolf" => 243,
+    "work" => 244,
+    "yank" => 245,
+    "yawn" => 246,
+    "yell" => 247,
+    "yoga" => 248,
+    "yurt" => 249,
+    "zaps" => 250,
+    "zero" => 251,
+    "zest" => 252,
+    "zinc" => 253,
+    "zone" => 254,
+    "zoom" => 255,
+};
 
 #[rustfmt::skip]
 pub(crate) const MINIMALS: [&str; 256] = [
@@ -335,267 +331,261 @@ pub(crate) const MINIMALS: [&str; 256] = [
     "ya", "yt", "zs", "zo", "zt", "zc", "ze", "zm",
 ];
 
-pub(crate) static MINIMAL_IDXS: once_cell::sync::Lazy<std::collections::HashMap<&'static str, u8>> =
-    once_cell::sync::Lazy::new(|| {
-        [
-            ("ae", 0),
-            ("ad", 1),
-            ("ao", 2),
-            ("ax", 3),
-            ("aa", 4),
-            ("ah", 5),
-            ("am", 6),
-            ("at", 7),
-            ("ay", 8),
-            ("as", 9),
-            ("bk", 10),
-            ("bd", 11),
-            ("bn", 12),
-            ("bt", 13),
-            ("ba", 14),
-            ("bs", 15),
-            ("be", 16),
-            ("by", 17),
-            ("bg", 18),
-            ("bw", 19),
-            ("bb", 20),
-            ("bz", 21),
-            ("cm", 22),
-            ("ch", 23),
-            ("cs", 24),
-            ("cf", 25),
-            ("cy", 26),
-            ("cw", 27),
-            ("ce", 28),
-            ("ca", 29),
-            ("ck", 30),
-            ("ct", 31),
-            ("cx", 32),
-            ("cl", 33),
-            ("cp", 34),
-            ("cn", 35),
-            ("dk", 36),
-            ("da", 37),
-            ("ds", 38),
-            ("di", 39),
-            ("de", 40),
-            ("dt", 41),
-            ("dr", 42),
-            ("dn", 43),
-            ("dw", 44),
-            ("dp", 45),
-            ("dm", 46),
-            ("dl", 47),
-            ("dy", 48),
-            ("eh", 49),
-            ("ey", 50),
-            ("eo", 51),
-            ("ee", 52),
-            ("ec", 53),
-            ("en", 54),
-            ("em", 55),
-            ("et", 56),
-            ("es", 57),
-            ("ft", 58),
-            ("fr", 59),
-            ("fn", 60),
-            ("fs", 61),
-            ("fm", 62),
-            ("fh", 63),
-            ("fz", 64),
-            ("fp", 65),
-            ("fw", 66),
-            ("fx", 67),
-            ("fy", 68),
-            ("fe", 69),
-            ("fg", 70),
-            ("fl", 71),
-            ("fd", 72),
-            ("ga", 73),
-            ("ge", 74),
-            ("gr", 75),
-            ("gs", 76),
-            ("gt", 77),
-            ("gl", 78),
-            ("gw", 79),
-            ("gd", 80),
-            ("gy", 81),
-            ("gm", 82),
-            ("gu", 83),
-            ("gh", 84),
-            ("go", 85),
-            ("hf", 86),
-            ("hg", 87),
-            ("hd", 88),
-            ("hk", 89),
-            ("ht", 90),
-            ("hp", 91),
-            ("hh", 92),
-            ("hl", 93),
-            ("hy", 94),
-            ("he", 95),
-            ("hn", 96),
-            ("hs", 97),
-            ("id", 98),
-            ("ia", 99),
-            ("ie", 100),
-            ("ih", 101),
-            ("iy", 102),
-            ("io", 103),
-            ("is", 104),
-            ("in", 105),
-            ("im", 106),
-            ("je", 107),
-            ("jz", 108),
-            ("jn", 109),
-            ("jt", 110),
-            ("jl", 111),
-            ("jo", 112),
-            ("js", 113),
-            ("jp", 114),
-            ("jk", 115),
-            ("jy", 116),
-            ("kp", 117),
-            ("ko", 118),
-            ("kt", 119),
-            ("ks", 120),
-            ("kk", 121),
-            ("kn", 122),
-            ("kg", 123),
-            ("ke", 124),
-            ("ki", 125),
-            ("kb", 126),
-            ("lb", 127),
-            ("la", 128),
-            ("ly", 129),
-            ("lf", 130),
-            ("ls", 131),
-            ("lr", 132),
-            ("lp", 133),
-            ("ln", 134),
-            ("lt", 135),
-            ("lo", 136),
-            ("ld", 137),
-            ("le", 138),
-            ("lu", 139),
-            ("lk", 140),
-            ("lg", 141),
-            ("mn", 142),
-            ("my", 143),
-            ("mh", 144),
-            ("me", 145),
-            ("mo", 146),
-            ("mu", 147),
-            ("mw", 148),
-            ("md", 149),
-            ("mt", 150),
-            ("ms", 151),
-            ("mk", 152),
-            ("nl", 153),
-            ("ny", 154),
-            ("nd", 155),
-            ("ns", 156),
-            ("nt", 157),
-            ("nn", 158),
-            ("ne", 159),
-            ("nb", 160),
-            ("oy", 161),
-            ("oe", 162),
-            ("ot", 163),
-            ("ox", 164),
-            ("on", 165),
-            ("ol", 166),
-            ("os", 167),
-            ("pd", 168),
-            ("pt", 169),
-            ("pk", 170),
-            ("py", 171),
-            ("ps", 172),
-            ("pm", 173),
-            ("pl", 174),
-            ("pe", 175),
-            ("pf", 176),
-            ("pa", 177),
-            ("pr", 178),
-            ("qd", 179),
-            ("qz", 180),
-            ("re", 181),
-            ("rp", 182),
-            ("rl", 183),
-            ("ro", 184),
-            ("rh", 185),
-            ("rd", 186),
-            ("rk", 187),
-            ("rf", 188),
-            ("ry", 189),
-            ("rn", 190),
-            ("rs", 191),
-            ("rt", 192),
-            ("se", 193),
-            ("sa", 194),
-            ("sr", 195),
-            ("ss", 196),
-            ("sk", 197),
-            ("sw", 198),
-            ("st", 199),
-            ("sp", 200),
-            ("so", 201),
-            ("sg", 202),
-            ("sb", 203),
-            ("sf", 204),
-            ("sn", 205),
-            ("to", 206),
-            ("tk", 207),
-            ("ti", 208),
-            ("tt", 209),
-            ("td", 210),
-            ("te", 211),
-            ("ty", 212),
-            ("tl", 213),
-            ("tb", 214),
-            ("ts", 215),
-            ("tp", 216),
-            ("ta", 217),
-            ("tn", 218),
-            ("uy", 219),
-            ("uo", 220),
-            ("ut", 221),
-            ("ue", 222),
-            ("ur", 223),
-            ("vt", 224),
-            ("vy", 225),
-            ("vo", 226),
-            ("vl", 227),
-            ("ve", 228),
-            ("vw", 229),
-            ("va", 230),
-            ("vd", 231),
-            ("vs", 232),
-            ("wl", 233),
-            ("wd", 234),
-            ("wm", 235),
-            ("wp", 236),
-            ("we", 237),
-            ("wy", 238),
-            ("ws", 239),
-            ("wt", 240),
-            ("wn", 241),
-            ("wz", 242),
-            ("wf", 243),
-            ("wk", 244),
-            ("yk", 245),
-            ("yn", 246),
-            ("yl", 247),
-            ("ya", 248),
-            ("yt", 249),
-            ("zs", 250),
-            ("zo", 251),
-            ("zt", 252),
-            ("zc", 253),
-            ("ze", 254),
-            ("zm", 255),
-        ]
-        .iter()
-        .copied()
-        .collect()
-    });
+pub(crate) static MINIMAL_IDXS: phf::Map<&'static str, u8> = phf_map! {
+    "ae" => 0,
+    "ad" => 1,
+    "ao" => 2,
+    "ax" => 3,
+    "aa" => 4,
+    "ah" => 5,
+    "am" => 6,
+    "at" => 7,
+    "ay" => 8,
+    "as" => 9,
+    "bk" => 10,
+    "bd" => 11,
+    "bn" => 12,
+    "bt" => 13,
+    "ba" => 14,
+    "bs" => 15,
+    "be" => 16,
+    "by" => 17,
+    "bg" => 18,
+    "bw" => 19,
+    "bb" => 20,
+    "bz" => 21,
+    "cm" => 22,
+    "ch" => 23,
+    "cs" => 24,
+    "cf" => 25,
+    "cy" => 26,
+    "cw" => 27,
+    "ce" => 28,
+    "ca" => 29,
+    "ck" => 30,
+    "ct" => 31,
+    "cx" => 32,
+    "cl" => 33,
+    "cp" => 34,
+    "cn" => 35,
+    "dk" => 36,
+    "da" => 37,
+    "ds" => 38,
+    "di" => 39,
+    "de" => 40,
+    "dt" => 41,
+    "dr" => 42,
+    "dn" => 43,
+    "dw" => 44,
+    "dp" => 45,
+    "dm" => 46,
+    "dl" => 47,
+    "dy" => 48,
+    "eh" => 49,
+    "ey" => 50,
+    "eo" => 51,
+    "ee" => 52,
+    "ec" => 53,
+    "en" => 54,
+    "em" => 55,
+    "et" => 56,
+    "es" => 57,
+    "ft" => 58,
+    "fr" => 59,
+    "fn" => 60,
+    "fs" => 61,
+    "fm" => 62,
+    "fh" => 63,
+    "fz" => 64,
+    "fp" => 65,
+    "fw" => 66,
+    "fx" => 67,
+    "fy" => 68,
+    "fe" => 69,
+    "fg" => 70,
+    "fl" => 71,
+    "fd" => 72,
+    "ga" => 73,
+    "ge" => 74,
+    "gr" => 75,
+    "gs" => 76,
+    "gt" => 77,
+    "gl" => 78,
+    "gw" => 79,
+    "gd" => 80,
+    "gy" => 81,
+    "gm" => 82,
+    "gu" => 83,
+    "gh" => 84,
+    "go" => 85,
+    "hf" => 86,
+    "hg" => 87,
+    "hd" => 88,
+    "hk" => 89,
+    "ht" => 90,
+    "hp" => 91,
+    "hh" => 92,
+    "hl" => 93,
+    "hy" => 94,
+    "he" => 95,
+    "hn" => 96,
+    "hs" => 97,
+    "id" => 98,
+    "ia" => 99,
+    "ie" => 100,
+    "ih" => 101,
+    "iy" => 102,
+    "io" => 103,
+    "is" => 104,
+    "in" => 105,
+    "im" => 106,
+    "je" => 107,
+    "jz" => 108,
+    "jn" => 109,
+    "jt" => 110,
+    "jl" => 111,
+    "jo" => 112,
+    "js" => 113,
+    "jp" => 114,
+    "jk" => 115,
+    "jy" => 116,
+    "kp" => 117,
+    "ko" => 118,
+    "kt" => 119,
+    "ks" => 120,
+    "kk" => 121,
+    "kn" => 122,
+    "kg" => 123,
+    "ke" => 124,
+    "ki" => 125,
+    "kb" => 126,
+    "lb" => 127,
+    "la" => 128,
+    "ly" => 129,
+    "lf" => 130,
+    "ls" => 131,
+    "lr" => 132,
+    "lp" => 133,
+    "ln" => 134,
+    "lt" => 135,
+    "lo" => 136,
+    "ld" => 137,
+    "le" => 138,
+    "lu" => 139,
+    "lk" => 140,
+    "lg" => 141,
+    "mn" => 142,
+    "my" => 143,
+    "mh" => 144,
+    "me" => 145,
+    "mo" => 146,
+    "mu" => 147,
+    "mw" => 148,
+    "md" => 149,
+    "mt" => 150,
+    "ms" => 151,
+    "mk" => 152,
+    "nl" => 153,
+    "ny" => 154,
+    "nd" => 155,
+    "ns" => 156,
+    "nt" => 157,
+    "nn" => 158,
+    "ne" => 159,
+    "nb" => 160,
+    "oy" => 161,
+    "oe" => 162,
+    "ot" => 163,
+    "ox" => 164,
+    "on" => 165,
+    "ol" => 166,
+    "os" => 167,
+    "pd" => 168,
+    "pt" => 169,
+    "pk" => 170,
+    "py" => 171,
+    "ps" => 172,
+    "pm" => 173,
+    "pl" => 174,
+    "pe" => 175,
+    "pf" => 176,
+    "pa" => 177,
+    "pr" => 178,
+    "qd" => 179,
+    "qz" => 180,
+    "re" => 181,
+    "rp" => 182,
+    "rl" => 183,
+    "ro" => 184,
+    "rh" => 185,
+    "rd" => 186,
+    "rk" => 187,
+    "rf" => 188,
+    "ry" => 189,
+    "rn" => 190,
+    "rs" => 191,
+    "rt" => 192,
+    "se" => 193,
+    "sa" => 194,
+    "sr" => 195,
+    "ss" => 196,
+    "sk" => 197,
+    "sw" => 198,
+    "st" => 199,
+    "sp" => 200,
+    "so" => 201,
+    "sg" => 202,
+    "sb" => 203,
+    "sf" => 204,
+    "sn" => 205,
+    "to" => 206,
+    "tk" => 207,
+    "ti" => 208,
+    "tt" => 209,
+    "td" => 210,
+    "te" => 211,
+    "ty" => 212,
+    "tl" => 213,
+    "tb" => 214,
+    "ts" => 215,
+    "tp" => 216,
+    "ta" => 217,
+    "tn" => 218,
+    "uy" => 219,
+    "uo" => 220,
+    "ut" => 221,
+    "ue" => 222,
+    "ur" => 223,
+    "vt" => 224,
+    "vy" => 225,
+    "vo" => 226,
+    "vl" => 227,
+    "ve" => 228,
+    "vw" => 229,
+    "va" => 230,
+    "vd" => 231,
+    "vs" => 232,
+    "wl" => 233,
+    "wd" => 234,
+    "wm" => 235,
+    "wp" => 236,
+    "we" => 237,
+    "wy" => 238,
+    "ws" => 239,
+    "wt" => 240,
+    "wn" => 241,
+    "wz" => 242,
+    "wf" => 243,
+    "wk" => 244,
+    "yk" => 245,
+    "yn" => 246,
+    "yl" => 247,
+    "ya" => 248,
+    "yt" => 249,
+    "zs" => 250,
+    "zo" => 251,
+    "zt" => 252,
+    "zc" => 253,
+    "ze" => 254,
+    "zm" => 255,
+};