tu wa tu wa tu wa
tu wa tu wa tu wa .
t u WORD_BOUNDARY w a WORD_BOUNDARY t u WORD_BOUNDARY w a WORD_BOUNDARY t u WORD_BOUNDARY w a WORD_BOUNDARY
t u WORD_BOUNDARY w a WORD_BOUNDARY t u WORD_BOUNDARY w a WORD_BOUNDARY t u WORD_BOUNDARY w a WORD_BOUNDARY