C111123313121111121111331333133313331323232133313331333133112331312121   >>    C11112331312111112111133133313331333132323213331333133313311233131212   <<    C111123313121111121111331333133313331323232133313331333133112331312123   >>      C111123313121111121111331333133313331323232133313331333133112331312122   >>