Y \ X
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
4970
4969
4968
4967
4966
4965
4964
4963
4962
4961
4960
4959
4958
4957
4956
4955
4954
4953
4952
4951
4950