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
6590
6589
6588
6587
6586
6585
6584
6583
6582
6581
6580
6579
6578
6577
6576
6575
6574
6573
6572
6571
6570