diff --git a/src/domain/japanese/index.ts b/src/domain/japanese/index.ts
index 44c606e9f1..ae20a5275e 100644
--- a/src/domain/japanese/index.ts
+++ b/src/domain/japanese/index.ts
@@ -44,13 +44,13 @@ export const convertLongVowel = (text: string): string => {
 // 参考：https://github.com/VOICEVOX/voicevox_core/blob/0848630d81ae3e917c6ff2038f0b15bbd4270702/crates/voicevox_core/src/user_dict/word.rs#L83-L90
 export const moraPattern = new RegExp(
   "(?:" +
-    "[イ][ェ]|[ヴ][ャュョ]|[トド][ゥ]|[テデ][ィャュョ]|[デ][ェ]|[クグ][ヮ]|" + // rule_others
-    "[キシチニヒミリギジビピ][ェャュョ]|" + // rule_line_i
-    "[ツフヴ][ァ]|[ウスツフヴズ][ィ]|[ウツフヴ][ェォ]|" + // rule_line_u
+    "[イ][ェ]|[ヴ][ャュョ]|[ウクグトド][ゥ]|[テデ][ィェャュョ]|[クグ][ヮ]|" + // rule_others
+    "[キシチニヒミリギジヂビピ][ェャュョ]|[キニヒミリギビピ][ィ]|" + // rule_line_i
+    "[クツフヴグ][ァ]|[ウクスツフヴグズ][ィ]|[ウクツフヴグ][ェォ]|" + // rule_line_u
     "[ァ-ヴー]|" + // rule_one_mora
-    "[い][ぇ]|[ゃゅょ]|[とど][ぅ]|[てで][ぃゃゅょ]|[で][ぇ]|[くぐ][ゎ]|" + // rule_others
-    "[きしちにひみりぎじびぴ][ぇゃゅょ]|" + // rule_line_i
-    "[つふゔ][ぁ]|[うすつふゔず][ぃ]|[うつふゔ][ぇぉ]|" + // rule_line_u
+    "[い][ぇ]|[ゔ][ゃゅょ]|[うくぐとど][ぅ]|[てで][ぃぇゃゅょ]|[くぐ][わ]|" + // rule_others
+    "[きしちにひみりぎじぢびぴ][ぇゃゅょ]|[きにひみりぎびぴ][ぃ]|" + // rule_line_i
+    "[くつふゔぐ][ぁ]|[うくすつふゔぐず][ぃ]|[うくつふゔぐ][ぇぉ]|" + // rule_line_u
     "[ぁ-ゔー]" + // rule_one_mora
     ")",
   "g",