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
4460
4459
4458
4457
4456
4455
4454
4453
4452
4451
4450
4449
4448
4447
4446
4445
4444
4443
4442
4441
4440