Y \ X
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
2720
2719
2718
2717
2716
2715
2714
2713
2712
2711
2710
2709
2708
2707
2706
2705
2704
2703
2702
2701
2700