Y \ X
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
4690
4689
4688
4687
4686
4685
4684
4683
4682
4681
4680
4679
4678
4677
4676
4675
4674
4673
4672
4671
4670