Y \ X
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
2720
2719
2718
2717
2716
2715
2714
2713
2712
2711
2710
2709
2708
2707
2706
2705
2704
2703
2702
2701
2700