when should we do that
when should we do that ?
w ɛ n WORD_BOUNDARY ʃ ʊ d WORD_BOUNDARY w iː WORD_BOUNDARY d uː WORD_BOUNDARY ð æ t WORD_BOUNDARY
w h e n WORD_BOUNDARY s h o u l d WORD_BOUNDARY w e WORD_BOUNDARY d o WORD_BOUNDARY t h a t WORD_BOUNDARY