Y \ X
870
871
872
873
874
875
876
877
878
879
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
10860
10859
10858
10857
10856
10855
10854
10853
10852
10851
10850
10849
10848
10847
10846
10845
10844
10843
10842
10841
10840