A writing system using a syllabary is complete when it covers all syllables in the corresponding spoken language without requiring complex orthographic / graphemic rules, like implicit codas ( C 1 V ⇒ /C 1 VC 2 /) silent vowels ( C 1 V 1 +C 2 V 2 ⇒ /C 1 V 1 C 2 /) or echo vowels ( C 1 V 1 +C 2 V 1 ⇒ /C 1 V 1 C 2 /). This loosely corresponds to shallow orthographies in alphabetic writing ...

The Korean alphabet, known as Hangul in South Korea and Chosŏn'gŭl in North Korea, is the modern official writing system for the Korean language. The letters for the five basic consonants reflect the shape of the speech organs used to pronounce them, and they are systematically modified to indicate phonetic features; similarly, the vowel letters are systematically modified …