Y \ X
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
5650
5649
5648
5647
5646
5645
5644
5643
5642
5641
5640
5639
5638
5637
5636
5635
5634
5633
5632
5631
5630