Y \ X
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
12180
12179
12178
12177
12176
12175
12174
12173
12172
12171
12170
12169
12168
12167
12166
12165
12164
12163
12162
12161
12160