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
4580
4579
4578
4577
4576
4575
4574
4573
4572
4571
4570
4569
4568
4567
4566
4565
4564
4563
4562
4561
4560