a koko abura ga aru kara
a koko abura ga aru kara .
a WORD_BOUNDARY k o k o WORD_BOUNDARY a b ɯ r a WORD_BOUNDARY g a WORD_BOUNDARY a r ɯ WORD_BOUNDARY k a r a WORD_BOUNDARY
a WORD_BOUNDARY k o k o WORD_BOUNDARY a b u r a WORD_BOUNDARY g a WORD_BOUNDARY a r u WORD_BOUNDARY k a r a WORD_BOUNDARY