扣 鈕鈕 扣 鈕鈕
kau3 nau2 kau3 nau2
v n n n
扣 鈕鈕 扣 鈕鈕 .
kʰ ɐu˧ WORD_BOUNDARY n ɐu˧˥ WORD_BOUNDARY kʰ ɐu˧ WORD_BOUNDARY n ɐu˧˥ WORD_BOUNDARY
扣 WORD_BOUNDARY 鈕 鈕 WORD_BOUNDARY 扣 WORD_BOUNDARY 鈕 鈕 WORD_BOUNDARY . WORD_BOUNDARY