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
15680
15679
15678
15677
15676
15675
15674
15673
15672
15671
15670
15669
15668
15667
15666
15665
15664
15663
15662
15661
15660