ararara atama utte itaiitai
ararara atama utte itaiitai .
a r a r a r a WORD_BOUNDARY a t a m a WORD_BOUNDARY ɯ t t e WORD_BOUNDARY i t a i i t a i WORD_BOUNDARY
a r a r a r a WORD_BOUNDARY a t a m a WORD_BOUNDARY u t t e WORD_BOUNDARY i t a i i t a i WORD_BOUNDARY