妈妈 涂 妈妈 涂
ma1 tu2 ma1 tu2
n:relat v n:relat v
妈妈 涂 妈妈 涂 .
m a˥ WORD_BOUNDARY tʰ u˧˥ WORD_BOUNDARY m a˥ WORD_BOUNDARY tʰ u˧˥ WORD_BOUNDARY 
妈 妈 WORD_BOUNDARY 涂 WORD_BOUNDARY 妈 妈 WORD_BOUNDARY 涂 WORD_BOUNDARY