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
9840
9839
9838
9837
9836
9835
9834
9833
9832
9831
9830
9829
9828
9827
9826
9825
9824
9823
9822
9821
9820