Y \ X
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
12890
12889
12888
12887
12886
12885
12884
12883
12882
12881
12880
12879
12878
12877
12876
12875
12874
12873
12872
12871
12870