Y \ X
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
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
3590
3589
3588
3587
3586
3585
3584
3583
3582
3581
3580
3579
3578
3577
3576
3575
3574
3573
3572
3571
3570