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
9040
9039
9038
9037
9036
9035
9034
9033
9032
9031
9030
9029
9028
9027
9026
9025
9024
9023
9022
9021
9020