C11111333133313232233133313331333133313221333133313232212111133133313232313131   >>    C1111133313331323223313331333133313331322133313331323221211113313331323231313   <<    C11111333133313232233133313331333133313221333133313232212111133133313232313133   >>      C11111333133313232233133313331333133313221333133313232212111133133313232313132   >>