ayo he+eh he+em he+em
ayo he eh he em he em .
a j o WORD_BOUNDARY h ɛ WORD_BOUNDARY  ɛ h WORD_BOUNDARY h ɛ WORD_BOUNDARY  ɛ m WORD_BOUNDARY h ɛ WORD_BOUNDARY  ɛ m WORD_BOUNDARY
a y o WORD_BOUNDARY h e WORD_BOUNDARY e h WORD_BOUNDARY h e WORD_BOUNDARY e m WORD_BOUNDARY h e WORD_BOUNDARY e m WORD_BOUNDARY