2?1
2
2?2
4
2?3
6
2?4
8
2?5
10
2?6
12
2?7
14
2?8
16
2?9
18
2?10
20
2?11
22
2?12
24
3?1
3
3?2
6
3?4
12
3?5
15
3?6
18
3?7
21
3?8
24
3?9
27
3?10
30
3?11
33
3?12
36
4?1
4
4?2
8
4?3
12
4?4
16
4?5
20
4?6
24
4?7
28
4?8
32
4?9
36
4?10
40
4?11
44
4?12
48
5?1
5
5?2
10
5?3
15
5?4
20
5?5
25
5?6
30
5?7
35
5?8
40
5?9
45
5?10
50
5?11
55
5?12
60