C11111333133313232233133313331333131133131121131211113311331311331111   >>    C1111133313331323223313331333133313113313112113121111331133131133111   <<    C11111333133313232233133313331333131133131121131211113311331311331113   >>      C11111333133313232233133313331333131133131121131211113311331311331112   >>