1-9=1
1-10=2
1-11=3
1-12=4
1-13=5
1-14=6
1-15=7
1-15=8
1-17=9
2-18=10
3-19=11
4-20=12
10-27=18
11-28=19
11-31=21
14-33=22
16-37=25
18-40=28
20-45=30
21-48=32
22-49=33
22-51=34
23-52=35
24-54=36
24-55=37
26-58=39
26-60=40
28-63=42
28-63=43
29-66=44
30-69=46
31-70=47
32-72=48
32-73=50
33-75=51
34-78=52
35-79=53
36-80=54
36-80=55
37-80=56
38-80=57
38-80=58
39-80=59
40-80=60
40-80=61
41-80=62
42-80=63
42-80=64
43-80=65
44-80=66
44-80=67
45-80=68
46-80=69
46-80=70
47-80=71
48-80=72
48-80=73
49-80=74
50-80=75
51-80=76
51-80=77
52-80=78
52-80=79
53-80=80