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
9250
9249
9248
9247
9246
9245
9244
9243
9242
9241
9240
9239
9238
9237
9236
9235
9234
9233
9232
9231
9230