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
13620
13619
13618
13617
13616
13615
13614
13613
13612
13611
13610
13609
13608
13607
13606
13605
13604
13603
13602
13601
13600