o ni ni ada buku ini nih
o ni ni ada buku ini nih .
o WORD_BOUNDARY n i WORD_BOUNDARY n i WORD_BOUNDARY a d a WORD_BOUNDARY b u k u WORD_BOUNDARY i n i WORD_BOUNDARY n i h WORD_BOUNDARY
o WORD_BOUNDARY n i WORD_BOUNDARY n i WORD_BOUNDARY a d a WORD_BOUNDARY b u k u WORD_BOUNDARY i n i WORD_BOUNDARY n i h WORD_BOUNDARY . WORD_BOUNDARY