he eh eh eh eh
he eh eh eh eh .
h ɛ WORD_BOUNDARY  ɛ h WORD_BOUNDARY ɛ h WORD_BOUNDARY ɛ h WORD_BOUNDARY ɛ h WORD_BOUNDARY
h e WORD_BOUNDARY e h WORD_BOUNDARY e h WORD_BOUNDARY e h WORD_BOUNDARY e h WORD_BOUNDARY