c aa4 咁 寫
c aa4 gam3 se2
n:let fil pro v
c aa4 咁 寫 ?
 WORD_BOUNDARY a˧˩̰ WORD_BOUNDARY k ɐ˧ m WORD_BOUNDARY s ɛ˨˥ WORD_BOUNDARY
c WORD_BOUNDARY a a 4 WORD_BOUNDARY 咁 WORD_BOUNDARY 寫 WORD_BOUNDARY ? WORD_BOUNDARY