妈妈 忘 了 拿 了
ma1 wang4 le na2 le
n:relat v asp v asp
妈妈 忘 了 拿 了 .
m a ˥ WORD_BOUNDARY w a ˥˩ ŋ WORD_BOUNDARY l ɤ WORD_BOUNDARY n a ˧˥ WORD_BOUNDARY l ɤ WORD_BOUNDARY 
妈 妈 WORD_BOUNDARY 忘 WORD_BOUNDARY 了 WORD_BOUNDARY 拿 WORD_BOUNDARY 了 WORD_BOUNDARY