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
13400
13399
13398
13397
13396
13395
13394
13393
13392
13391
13390
13389
13388
13387
13386
13385
13384
13383
13382
13381
13380