how they're helping
how they help
pro:rel pro:sub part
how they're helping ?
h aʊ WORD_BOUNDARY ð eɪ ɚ WORD_BOUNDARY h ɛ l p ɪ ŋ WORD_BOUNDARY
h o w WORD_BOUNDARY t h e y ' r e WORD_BOUNDARY h e l p i n g WORD_BOUNDARY