pen ni naru n da yo
pen ni naru n da yo .
p e n WORD_BOUNDARY n i WORD_BOUNDARY n a r ɯ WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY j o WORD_BOUNDARY
p e n WORD_BOUNDARY n i WORD_BOUNDARY n a r u WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY y o WORD_BOUNDARY