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
3080
3079
3078
3077
3076
3075
3074
3073
3072
3071
3070
3069
3068
3067
3066
3065
3064
3063
3062
3061
3060