C11111333133313232233133313331333133313221333133313232212111111211312311   >>    C1111133313331323223313331333133313331322133313331323221211111121131231   <<    C11111333133313232233133313331333133313221333133313232212111111211312313   >>      C11111333133313232233133313331333133313221333133313232212111111211312312   >>