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
13630
13629
13628
13627
13626
13625
13624
13623
13622
13621
13620
13619
13618
13617
13616
13615
13614
13613
13612
13611
13610