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
15700
15699
15698
15697
15696
15695
15694
15693
15692
15691
15690
15689
15688
15687
15686
15685
15684
15683
15682
15681
15680