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
11220
11219
11218
11217
11216
11215
11214
11213
11212
11211
11210
11209
11208
11207
11206
11205
11204
11203
11202
11201
11200