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
14210
14209
14208
14207
14206
14205
14204
14203
14202
14201
14200
14199
14198
14197
14196
14195
14194
14193
14192
14191
14190