Y \ X
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
9880
9879
9878
9877
9876
9875
9874
9873
9872
9871
9870
9869
9868
9867
9866
9865
9864
9863
9862
9861
9860