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
9820
9819
9818
9817
9816
9815
9814
9813
9812
9811
9810
9809
9808
9807
9806
9805
9804
9803
9802
9801
9800