Y \ X
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
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
13630
13629
13628
13627
13626
13625
13624
13623
13622
13621
13620
13619
13618
13617
13616
13615
13614
13613
13612
13611
13610