Y \ X
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
4850
4849
4848
4847
4846
4845
4844
4843
4842
4841
4840
4839
4838
4837
4836
4835
4834
4833
4832
4831
4830