Y \ X
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
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
13630
13629
13628
13627
13626
13625
13624
13623
13622
13621
13620
13619
13618
13617
13616
13615
13614
13613
13612
13611
13610