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
5450
5449
5448
5447
5446
5445
5444
5443
5442
5441
5440
5439
5438
5437
5436
5435
5434
5433
5432
5431
5430