tu dua tu dua tu dua tu dua tu dua tu dua
tu dua tu dua tu dua tu dua tu dua tu dua .
t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY
t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY t u WORD_BOUNDARY d u a WORD_BOUNDARY . WORD_BOUNDARY