awas ada duri ada duri
awas ada duri ada duri .
a w a s WORD_BOUNDARY a d a WORD_BOUNDARY d u r i WORD_BOUNDARY a d a WORD_BOUNDARY d u r i WORD_BOUNDARY
a w a s WORD_BOUNDARY a d a WORD_BOUNDARY d u r i WORD_BOUNDARY a d a WORD_BOUNDARY d u r i WORD_BOUNDARY . WORD_BOUNDARY