Y \ X
960
961
962
963
964
965
966
967
968
969
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
6980
6979
6978
6977
6976
6975
6974
6973
6972
6971
6970
6969
6968
6967
6966
6965
6964
6963
6962
6961
6960