5+5
10
15+15
30
25+25
50
35+35
70
7+7
14
17+17
34
27+27
54
37+37
74
9+9
18
19+19
38
29+29
58
39+39
78
11+11
22
21+21
42
31+31
62
41+41
82
13+13
26
23+23
46
33+33
66
43+43
86