Y \ X
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
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
10130
10129
10128
10127
10126
10125
10124
10123
10122
10121
10120
10119
10118
10117
10116
10115
10114
10113
10112
10111
10110