要 给 爷爷 nei
yao4 gei3 ye2 nei
v prep n:relat on
要 给 爷爷 nei .
j au̯ ˥˩ WORD_BOUNDARY k ei̯ ˧˩˧ WORD_BOUNDARY j e ˧˥ WORD_BOUNDARY n ei̯ WORD_BOUNDARY 
要 WORD_BOUNDARY 给 WORD_BOUNDARY 爷 爷 WORD_BOUNDARY n e i WORD_BOUNDARY