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
11830
11829
11828
11827
11826
11825
11824
11823
11822
11821
11820
11819
11818
11817
11816
11815
11814
11813
11812
11811
11810