Y \ X
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
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
6220
6219
6218
6217
6216
6215
6214
6213
6212
6211
6210
6209
6208
6207
6206
6205
6204
6203
6202
6201
6200