ara bakku bakku bakku
ara bakku bakku bakku .
a r a WORD_BOUNDARY b a k k ɯ WORD_BOUNDARY b a k k ɯ WORD_BOUNDARY b a k k ɯ WORD_BOUNDARY
a r a WORD_BOUNDARY b a k k u WORD_BOUNDARY b a k k u WORD_BOUNDARY b a k k u WORD_BOUNDARY