Y \ X
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
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
4850
4849
4848
4847
4846
4845
4844
4843
4842
4841
4840
4839
4838
4837
4836
4835
4834
4833
4832
4831
4830