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
12510
12509
12508
12507
12506
12505
12504
12503
12502
12501
12500
12499
12498
12497
12496
12495
12494
12493
12492
12491
12490