a_in a_in a_bin bon ban
a in a in a bin bon ban .
a WORD_BOUNDARY i n WORD_BOUNDARY a WORD_BOUNDARY i n WORD_BOUNDARY a WORD_BOUNDARY β i n WORD_BOUNDARY β o̞ n WORD_BOUNDARY β a n WORD_BOUNDARY
a WORD_BOUNDARY i n WORD_BOUNDARY a WORD_BOUNDARY i n WORD_BOUNDARY a WORD_BOUNDARY b i n WORD_BOUNDARY b o n WORD_BOUNDARY b a n WORD_BOUNDARY . WORD_BOUNDARY