C11111333133313232233133313331333131133131121131211113313232311211   >>    C1111133313331323223313331333133313113313112113121111331323231121   <<    C11111333133313232233133313331333131133131121131211113313232311213   >>      C11111333133313232233133313331333131133131121131211113313232311212   >>