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
10560
10559
10558
10557
10556
10555
10554
10553
10552
10551
10550
10549
10548
10547
10546
10545
10544
10543
10542
10541
10540