duar duar dor dor dor dor
duar duar dor dor dor dor .
d u a r WORD_BOUNDARY d u a r WORD_BOUNDARY d o r WORD_BOUNDARY d o r WORD_BOUNDARY d o r WORD_BOUNDARY d o r WORD_BOUNDARY
d u a r WORD_BOUNDARY d u a r WORD_BOUNDARY d o r WORD_BOUNDARY d o r WORD_BOUNDARY d o r WORD_BOUNDARY d o r WORD_BOUNDARY . WORD_BOUNDARY