C111123313331323113313331333133313121111133112121111331323321231211   >>    C11112331333132311331333133313331312111113311212111133132332123121   <<    C111123313331323113313331333133313121111133112121111331323321231213   >>      C111123313331323113313331333133313121111133112121111331323321231212   >>