Y \ X
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
13810
13809
13808
13807
13806
13805
13804
13803
13802
13801
13800
13799
13798
13797
13796
13795
13794
13793
13792
13791
13790