Y \ X
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
5480
5479
5478
5477
5476
5475
5474
5473
5472
5471
5470
5469
5468
5467
5466
5465
5464
5463
5462
5461
5460