C132233133112121111331333133313231333133313231311331333131122213121   >>    C13223313311212111133133313331323133313331323131133133313112221312   <<    C132233133112121111331333133313231333133313231311331333131122213123   >>      C132233133112121111331333133313231333133313231311331333131122213122   >>