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
10460
10459
10458
10457
10456
10455
10454
10453
10452
10451
10450
10449
10448
10447
10446
10445
10444
10443
10442
10441
10440