he+eh satu anak satu
he eh satu anak satu .
h ɛ WORD_BOUNDARY  ɛ h WORD_BOUNDARY s a t u WORD_BOUNDARY  a n a k WORD_BOUNDARY s a t u WORD_BOUNDARY
h e WORD_BOUNDARY e h WORD_BOUNDARY s a t u WORD_BOUNDARY a n a k WORD_BOUNDARY s a t u WORD_BOUNDARY