C11111333133313232233133313331333133313331311331333133322123221   >>    C1111133313331323223313331333133313331333131133133313332212322   <<    C11111333133313232233133313331333133313331311331333133322123223   >>      C11111333133313232233133313331333133313331311331333133322123222   >>