Y \ X
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
4470
4469
4468
4467
4466
4465
4464
4463
4462
4461
4460
4459
4458
4457
4456
4455
4454
4453
4452
4451
4450