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