Hangul consonant and vowel tables

Called choseong, or "initials", there are 19 initial consonants, whereof one (ㅇ) is silent, and five (ㄲ, ㄸ, ㅃ, ㅆ, ㅉ) are doubled:

Called jungseong, or "vowels", there are 21 medial vowels:

Called jongseong, or "finals", there are 27 final consonants; with the additional case of no final consonant, there is a total of 28 possibilities:

Several collation sequences are used to order words (like alphabetical sorting). The North and South differ on (a) the treatment of composite jamo consonants in syllable-leading (choseong) and -trailing (jongseong) position, and (b) on the treatment of composite jamo vowels in syllable-medial (jungseong) position.

This first sequence is official in South Korea (and is the basic binary order of codepoints in Unicode):

Sequences of this second type are common in North Korea:

With 19 possible initial consonants, 21 possible vowels, and 28 possible final consonants (of which one corresponds to the case of no final consonant), there are a total of 19 × 21 × 28 = 11,172 theoretically possible "Korean syllabic blocks",^[1] which are contiguously encoded in the 11,172 Unicode code points from U+AC00 through U+D7A3 in the Hangul Syllables Unicode block. However, the majority of these theoretically possible syllabic blocks do not correspond to syllabic blocks found in actual Korean words or proper names.

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