o iya aduh Ibu lupa
o iya aduh ibu lupa .
o WORD_BOUNDARY  i j a WORD_BOUNDARY  a d u h WORD_BOUNDARY i b u WORD_BOUNDARY l u p a WORD_BOUNDARY
o WORD_BOUNDARY i y a WORD_BOUNDARY a d u h WORD_BOUNDARY i b u WORD_BOUNDARY l u p a WORD_BOUNDARY