o ya sudah aku turun
o ya sudah aku turun .
o WORD_BOUNDARY j a WORD_BOUNDARY s u d a h WORD_BOUNDARY a k u WORD_BOUNDARY t u r u n WORD_BOUNDARY
o WORD_BOUNDARY y a WORD_BOUNDARY s u d a h WORD_BOUNDARY a k u WORD_BOUNDARY t u r u n WORD_BOUNDARY . WORD_BOUNDARY