refactor : 특수문자, 숫자, 영어 표준화 함수 수정

@@ -92,18 +92,28 @@ const isVowelSpecial = (preLetter, letter, nextLetter) => {
 
 const standardizeSpecialConsonent = (letter) => {
   switch (letter) {
-    case ('g', 'ㅑ'):
-      return 'ㅏ';
-    case ('ㅗ', 'ㅛ'):
-      return 'ㅗ';
-    case ('ㅐ', 'ㅒ', 'ㅔ', 'ㅖ', 'ㅙ', 'ㅚ', 'ㅝ', 'ㅞ'):
-      return 'ㅐ';
-    case ('ㅜ', 'ㅠ'):
-      return 'ㅜ';
-    case ('ㅓ', 'ㅕ'):
-      return 'ㅓ';
-    case ('ㅟ', 'ㅢ', 'ㅣ'):
-      return 'ㅣ';
+    case ('g', 'k', 'G', 'K'):
+      return 'ㄱ';
+    case ('b', 'v', 'B', 'V'):
+      return 'ㅂ';
+    case ('P', 'p', 'F', 'f'):
+      return 'ㅍ';
+    case ('n', 'L', 'N'):
+      return 'ㄴ';
+    case ('s', 'A', 'S', 'C', 'c'):
+      return 'ㅅ';
+    case ('d', 't', 'E'):
+      return 'ㄷ';
+    case ('o', 'O'):
+      return 'ㅇ';
+    case ('r', 'R'):
+      return 'ㄹ';
+    case ('j', 'z', 'J', 'Z'):
+      return 'ㅈ';
+    case ('m', '口', 'M'):
+      return 'ㅁ';
+    case ('h', 'H'):
+      return 'ㅎ';
     default:
       return letter;
   }
@@ -111,17 +121,13 @@ const standardizeSpecialConsonent = (letter) => {
 
 const standardizeSpecialVowel = (letter) => {
   switch (letter) {
-    case ('g', 'ㅑ'):
+    case ('a', 'A'):
       return 'ㅏ';
-    case ('ㅗ', 'ㅛ'):
-      return 'ㅗ';
-    case ('ㅐ', 'ㅒ', 'ㅔ', 'ㅖ', 'ㅙ', 'ㅚ', 'ㅝ', 'ㅞ'):
-      return 'ㅐ';
-    case ('ㅜ', 'ㅠ'):
-      return 'ㅜ';
-    case ('ㅓ', 'ㅕ'):
+    case ('u', 'U'):
       return 'ㅓ';
-    case ('ㅟ', 'ㅢ', 'ㅣ'):
+    case ('@', 'H'):
+      return 'ㅐ';
+    case ('l', '1', 'i', 'I', '!'):
       return 'ㅣ';
     default:
       return letter;