C111123313121111121111331333133313331333133313331333133312111133132213321   >>    C11112331312111112111133133313331333133313331333133313331211113313221332   <<    C111123313121111121111331333133313331333133313331333133312111133132213323   >>      C111123313121111121111331333133313331333133313331333133312111133132213322   >>