koo natteru koo natteru
koo natteru koo natteru .
k oː WORD_BOUNDARY n a t t e r ɯ WORD_BOUNDARY k oː WORD_BOUNDARY n a t t e r ɯ WORD_BOUNDARY
k o o WORD_BOUNDARY n a t t e r u WORD_BOUNDARY k o o WORD_BOUNDARY n a t t e r u WORD_BOUNDARY