c'est la dernière lettre hein
être la dernier lettre hein
v:aux det:art n n co
c'est la dernière lettre hein ?
s ɛ WORD_BOUNDARY l a WORD_BOUNDARY d ɛ ʁ n j ɛ ʁ WORD_BOUNDARY l ɛ t ʁ WORD_BOUNDARY  ɛ̃ WORD_BOUNDARY
c ' e s t WORD_BOUNDARY l a WORD_BOUNDARY d e r n i è r e WORD_BOUNDARY l e t t r e WORD_BOUNDARY h e i n WORD_BOUNDARY