1. /u͜o/ is written with 2 letters: ua, uô-
+) "ua" is written in a syllable which has no final sounds: chua, mua, cua,....
+) " uô-" is written in a syllable which has final sounds: muốn, chuối, thuốc,...
2. /ɯ͜ɤ/ is written with 2 letters: ưa, ươ-
+) "ưa" is written in a syllable which has no...