All transcriptions of Korean incorporate digraphs of 1 sort or A different and use separators to differentiate a string of two letters of their different values from their one benefit as a digraph.

Some letters were only used to 솔루션분양 represent the sounds of Chinese rime tables. Some of the Korean sounds represented by these out of date letters still exist in dialects.

The compound vowels ending in i were originally diphthongs. Even so, various have since developed into pure vowels: