C11111333133313232233133313331333133313221333133313232212111133133313112221211   >>    C1111133313331323223313331333133313331322133313331323221211113313331311222121   <<    C11111333133313232233133313331333133313221333133313232212111133133313112221213   >>      C11111333133313232233133313331333133313221333133313232212111133133313112221212   >>