Y \ X
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
12720
12719
12718
12717
12716
12715
12714
12713
12712
12711
12710
12709
12708
12707
12706
12705
12704
12703
12702
12701
12700