Mama wa oboeteru wa yo
mama wa oboeteru wa yo .
m a m a WORD_BOUNDARY w a WORD_BOUNDARY o b o e t e r ɯ WORD_BOUNDARY w a WORD_BOUNDARY j o WORD_BOUNDARY
m a m a WORD_BOUNDARY w a WORD_BOUNDARY o b o e t e r u WORD_BOUNDARY w a WORD_BOUNDARY y o WORD_BOUNDARY