The following letters and clusters of letters are found in the modern script:
14 consonant letters: ㄱ g, ㄴ n, ㄷ d, ㄹ l/r, ㅁ m, ㅂ b, ㅅ s, ㅇ null/ng, ㅈ j, ㅊ ch, ㅋ k, ㅌ t, ㅍ p, ㅎ h6 vowel letters: ㅏ a, ㅓ eo, ㅗ o, ㅜ u, ㅡ eu, ㅣ i4 vowels (with a y): ㅑ ya, ㅕ yeo, ㅛ yo, ㅠ yu
And the digraphs:
5 double ("tense") consonants: ㄲ kk, ㄸ tt, ㅃ pp, ㅆ ss, ㅉ jj11 : ㄳ gs, ㄵ nj, ㄶ nh, ㄺ lg, ㄻ lm, ㄼ lb, ㄽ ls, ㄾ lt, ㄿ lp, ㅀ lh, ㅄ bs5 (iotized) diphthongs: ㅐ ae, ㅒ yae, ㅔ e, ㅖ ye, ㅢ ui6 vowels and diphthongs with a w: ㅘ wa, ㅙ wae, ㅚ oe, ㅝ wo, ㅞ we, ㅟ wi
In addition, there are numerous obsolete letters, as well as a number of sequences that are no longer used. Some of these were only ever used for transcribing Chinese.
13 obsolete consonants: ᄛ, ㅱ, ㅸ, ᄼ, ᄾ, ㅿ, ㆁ (as distinct from ㅇ), ᅎ, ᅐ, ᅔ, ᅕ, ㆄ, ㆆ10 obsolete double consonants: ㅥ, ᄙ, ㅹ, ᄽ, ᄿ, ᅇ, ᇮ, ᅏ, ᅑ, ㆅ66 obsolete clusters of two consonants: ᇃ, ᄓ, ㅦ, ᄖ, ㅧ, ㅨ, ᇉ, ᄗ, ᇋ, ᄘ, ㅪ, ㅬ, ᇘ, ㅭ, ᇚ, ᇛ, ㅮ, ㅯ, ㅰ, ᇠ, ᇡ, ㅲ, ᄟ, ㅳ, ᇣ, ㅶ, ᄨ, ㅷ, ᄪ, ᇥ, ㅺ, ㅻ, ㅼ, ᄰ, ᄱ, ㅽ, ᄵ, ㅾ, ᄷ, ᄸ, ᄹ, ᄺ, ᄻ, ᅁ, ᅂ, ᅃ, ᅄ, ᅅ, ᅆ, ᅈ, ᅉ, ᅊ, ᅋ, ᇬ, ᇭ, ㆂ, ㆃ, ᇯ, ᅍ, ᅒ, ᅓ, ᅖ, ᇵ, ᇶ, ᇷ, ᇸand 17 of three consonants: ᇄ, ㅩ, ᇏ, ᇑ, ᇒ, ㅫ, ᇔ, ᇕ, ᇖ, ᇞ, ㅴ, ㅵ, ᄤ, ᄥ, ᄦ, ᄳ, ᄴ1 obsolete vowel: ㆍ arae-a ('sub-a'; still used in the and sometimes as a substitute for ㅏ a in logos and advertisements)44 obsolete diphthongs and vowel sequences: ᆜ, ᆝ, ᆢ,[] ᅷ, ᅸ, ᅹ, ᅺ, ᅻ, ᅼ, ᅽ, ᅾ, ᅿ, ᆀ, ᆁ, ᆂ, ᆃ, ㆇ, ㆈ, ᆆ, ᆇ, ㆉ, ᆉ, ᆊ, ᆋ, ᆌ, ᆍ, ᆎ, ᆏ, ᆐ, ㆊ, ㆋ, ᆓ, ㆌ, ᆕ, ᆖ, ᆗ, ᆘ, ᆙ, ᆚ, ᆛ, ᆟ, ᆠ, ㆎ
Notes:
The four iotated vowels are derived by adding a short stroke to the basic vowel. They are counted as part of the 24 letters of the alphabet because the iotating stroke is not a letter on its own. In fact, there is no letter for y in Hangul.Of the consonants, ㅊ chieut, ㅋ kieuk, ㅌ tieut, and ㅍ pieup are derivatives of ㅈ jieut, ㄱ giyeok, ㄷ digeut, and ㅂ bieup, respectively, formed by adding an extra stroke to the unaspirated letters. These are also counted as separate letters of the alphabet, as the aspirating stroke is not a letter on its own.The doubled consonants, which are used in South Korea, are also counted as separate letters of the alphabet. In North Korea, their sounds are written by combining ㅅ s with the basic consonant: ㅺ, ㅼ, ㅽ, ㅆ, ㅾ
