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
4090
4089
4088
4087
4086
4085
4084
4083
4082
4081
4080
4079
4078
4077
4076
4075
4074
4073
4072
4071
4070