Y \ X
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
11540
11539
11538
11537
11536
11535
11534
11533
11532
11531
11530
11529
11528
11527
11526
11525
11524
11523
11522
11521
11520