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
4770
4769
4768
4767
4766
4765
4764
4763
4762
4761
4760
4759
4758
4757
4756
4755
4754
4753
4752
4751
4750