aku ama Papa aku ama Ibu
aku ama papa aku ama ibu .
a k u WORD_BOUNDARY  a m a WORD_BOUNDARY p a p a WORD_BOUNDARY  a k u WORD_BOUNDARY  a m a WORD_BOUNDARY  i b u WORD_BOUNDARY
a k u WORD_BOUNDARY a m a WORD_BOUNDARY p a p a WORD_BOUNDARY a k u WORD_BOUNDARY a m a WORD_BOUNDARY i b u WORD_BOUNDARY