he+eh he+eh betul
he eh he eh betul .
h ɛ WORD_BOUNDARY  ɛ h WORD_BOUNDARY h ɛ WORD_BOUNDARY  ɛ h WORD_BOUNDARY b ɛ t u l WORD_BOUNDARY
h e WORD_BOUNDARY e h WORD_BOUNDARY h e WORD_BOUNDARY e h WORD_BOUNDARY b e t u l WORD_BOUNDARY