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
15460
15459
15458
15457
15456
15455
15454
15453
15452
15451
15450
15449
15448
15447
15446
15445
15444
15443
15442
15441
15440