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
13480
13479
13478
13477
13476
13475
13474
13473
13472
13471
13470
13469
13468
13467
13466
13465
13464
13463
13462
13461
13460