When we write individual
letters in a syllabic unit for actual writing, there are five cases.
As illustrated in the following diagram, the individual letters
are arranged and proportioned to fit neatly into a square box, and
are always read from left to right, then top to bottom.
A maximal Korean syllable structure
is CVCC, where C represents "consonant" and V "vowel".
While C is optional, V is obligatory.
The Korean syllable structure can therefore be re-written as (C) V (C) (C). All the possible combinations of the
syllable occurrences are exemplified as the following: