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
11000
10999
10998
10997
10996
10995
10994
10993
10992
10991
10990
10989
10988
10987
10986
10985
10984
10983
10982
10981
10980