cai cai ba_lão
cai cai ba lão .
k ai WORD_BOUNDARY k ai WORD_BOUNDARY b ɐ WORD_BOUNDARY l̪ˠ ɐ̃u̜ WORD_BOUNDARY
c a i WORD_BOUNDARY c a i WORD_BOUNDARY b a WORD_BOUNDARY l ã o WORD_BOUNDARY . WORD_BOUNDARY