C11111333133313232233133313331333133313223322121111133313113313331313111   >>    C1111133313331323223313331333133313331322332212111113331311331333131311   <<    C11111333133313232233133313331333133313223322121111133313113313331313113   >>      C11111333133313232233133313331333133313223322121111133313113313331313112   >>