Y \ X
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
9630
9629
9628
9627
9626
9625
9624
9623
9622
9621
9620
9619
9618
9617
9616
9615
9614
9613
9612
9611
9610