Y \ X
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
13610
13609
13608
13607
13606
13605
13604
13603
13602
13601
13600
13599
13598
13597
13596
13595
13594
13593
13592
13591
13590