happy birthday to you 呀
happy to you aa3
adj prep pro co
happy birthday to you 呀 ?
 WORD_BOUNDARY  WORD_BOUNDARY  WORD_BOUNDARY a˧ WORD_BOUNDARY
h a p p y WORD_BOUNDARY b i r t h d a y WORD_BOUNDARY t o WORD_BOUNDARY y o u WORD_BOUNDARY 呀 WORD_BOUNDARY ? WORD_BOUNDARY