dah dah stop stop stop stop
dah dah stop stop stop stop .
d a h WORD_BOUNDARY d a h WORD_BOUNDARY s t o p WORD_BOUNDARY s t o p WORD_BOUNDARY s t o p WORD_BOUNDARY s t o p WORD_BOUNDARY
d a h WORD_BOUNDARY d a h WORD_BOUNDARY s t o p WORD_BOUNDARY s t o p WORD_BOUNDARY s t o p WORD_BOUNDARY s t o p WORD_BOUNDARY . WORD_BOUNDARY