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
15650
15649
15648
15647
15646
15645
15644
15643
15642
15641
15640
15639
15638
15637
15636
15635
15634
15633
15632
15631
15630