유니코드 사이트(http://www.unicode.org/)
private static final char[] INITIAL_SOUND = { 'ㄱ', 'ㄲ', 'ㄴ', 'ㄷ', 'ㄸ', 'ㄹ',
// 'ㅁ', 'ㅂ', 'ㅃ', 'ㅅ', 'ㅆ', 'ㅇ', 'ㅈ', 'ㅉ', 'ㅊ', 'ㅋ', 'ㅌ', 'ㅍ', 'ㅎ' };
private static final char[] INITIAL_SOUND = {0x3131, 0x3132, 0x3134, 0x3137, 0x3138, 0x3139, 0x3141, 0x3142, 0x3143, 0x3145, 0x3146,
0x3147, 0x3148, 0x3149, 0x314a, 0x314b, 0x314c, 0x314d, 0x314e };