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
4370
4369
4368
4367
4366
4365
4364
4363
4362
4361
4360
4359
4358
4357
4356
4355
4354
4353
4352
4351
4350