a Taro abunai abunai
a taro abunai abunai .
a WORD_BOUNDARY t a r o WORD_BOUNDARY a b ɯ n a i WORD_BOUNDARY a b ɯ n a i WORD_BOUNDARY
a WORD_BOUNDARY t a r o WORD_BOUNDARY a b u n a i WORD_BOUNDARY a b u n a i WORD_BOUNDARY