aku dulu aku dulu aku dulu
aku dulu aku dulu aku dulu .
a k u WORD_BOUNDARY d u l u WORD_BOUNDARY a k u WORD_BOUNDARY d u l u WORD_BOUNDARY a k u WORD_BOUNDARY d u l u WORD_BOUNDARY
a k u WORD_BOUNDARY d u l u WORD_BOUNDARY a k u WORD_BOUNDARY d u l u WORD_BOUNDARY a k u WORD_BOUNDARY d u l u WORD_BOUNDARY . WORD_BOUNDARY