o musti diulang+ulang
o musti diulang ulang ?
o WORD_BOUNDARY m u s t i WORD_BOUNDARY d i u l a ŋ WORD_BOUNDARY u l a ŋ WORD_BOUNDARY
o WORD_BOUNDARY m u s t i WORD_BOUNDARY d i u l a n g WORD_BOUNDARY u l a n g WORD_BOUNDARY