C11111333133313232233133313331333133313221333133313232322333211   >>    C1111133313331323223313331333133313331322133313331323232233321   <<    C11111333133313232233133313331333133313221333133313232322333213   >>      C11111333133313232233133313331333133313221333133313232322333212   >>