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
13800
13799
13798
13797
13796
13795
13794
13793
13792
13791
13790
13789
13788
13787
13786
13785
13784
13783
13782
13781
13780