udah berapa itu bolak+balik
udah berapa itu bolak balik ?
u d a h WORD_BOUNDARY b ə r a p a WORD_BOUNDARY  i t u WORD_BOUNDARY b o l a k WORD_BOUNDARY b a l i k WORD_BOUNDARY
u d a h WORD_BOUNDARY b e r a p a WORD_BOUNDARY i t u WORD_BOUNDARY b o l a k WORD_BOUNDARY b a l i k WORD_BOUNDARY