Y \ X
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
8680
8679
8678
8677
8676
8675
8674
8673
8672
8671
8670
8669
8668
8667
8666
8665
8664
8663
8662
8661
8660