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
13670
13669
13668
13667
13666
13665
13664
13663
13662
13661
13660
13659
13658
13657
13656
13655
13654
13653
13652
13651
13650