Jamo or Nasor are the constituent parts of Hangil. Ja means letter and Mo means mother. As a whole, the word means the blocks that make up the word.
There are a total of 51 sets, of which 24 correspond to letters of the alphabet, and the remaining 27 sets are combinations of two or three letters (digraphs and trigraphs). Of the 24 simple words, 14 are consonants (Kor. Ja-im 자음, 子音) and 10 are vowels (Mo-im vowel, 母音). Out of 16 digraphs, 5 strong consonants are formed from doubled simple consonants, and the remaining 11 are formed from different letters. Jamo's 10 vowels are grouped into 11 diphthongs. Thus, Hangil looks like this:
14 simple consonants: ㄱㄴㄷㄹㅁㅂㅅㅇㅈㅊㅋㅌㅍㅎ, obsolete: ㅿㆁㆆㅱㅸㆄ
5 double consonants: ㄲㄸㅃㅆㅉ, obsolete: ㅥㆀㆅㅹ
11 digraphs: ㄳㄵㄶㄺㄻㄼㄽㄾㄿㅀㅄ, obsolete: ㅦㅧㅨㅪㅬㅭㅮㅯㅰㅲㅳㅶㅷㅺㅻㅼㅽㅾㆂㅫ ㅴㅵ
6 simple vowels: ㅏㅓㅗㅜㅡㅣ, obsolete ones: ㆍ
4 softened vowels: ㅑㅕㅛㅠ
11 diphthongs: ㅐㅒㅔㅖㅘㅙㅚㅝㅞㅟㅢ, obsolete: ㆎㆇㆈㆉㆊㆋㆌ