唉 怎么 办 呐
ai1 zen3me ban4 na
co adv:wh v sfp
唉 怎么 办 呐 .
ai̯˥ WORD_BOUNDARY ts ə˧˩˧ n m ɤ WORD_BOUNDARY p a˥˩ n WORD_BOUNDARY n a WORD_BOUNDARY 
唉 WORD_BOUNDARY 怎 么 WORD_BOUNDARY 办 WORD_BOUNDARY 呐 WORD_BOUNDARY