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
12170
12169
12168
12167
12166
12165
12164
12163
12162
12161
12160
12159
12158
12157
12156
12155
12154
12153
12152
12151
12150