C11111333133313232233133313331333133313331313113313132313232311   >>    C1111133313331323223313331333133313331333131311331313231323231   <<    C11111333133313232233133313331333133313331313113313132313232313   >>      C11111333133313232233133313331333133313331313113313132313232312   >>