hm ati+ati ati+ati
hm ati ati ati ati !
h m WORD_BOUNDARY a t i WORD_BOUNDARY a t i WORD_BOUNDARY a t i WORD_BOUNDARY a t i WORD_BOUNDARY
h m WORD_BOUNDARY a t i WORD_BOUNDARY a t i WORD_BOUNDARY a t i WORD_BOUNDARY a t i WORD_BOUNDARY ! WORD_BOUNDARY