C11111333133313232233133313331333131133131211111333132333312111   >>    C1111133313331323223313331333133313113313121111133313233331211   <<    C11111333133313232233133313331333131133131211111333132333312113   >>      C11111333133313232233133313331333131133131211111333132333312112   >>