------------------------------------------------------A------------------------------------------------
1 c
2 d
3 b
4 a
5 a
6 c
7 a
8 b
9 a
10 a
----------------------------------------------------B--------------------------------------------------
1 launched
2 investors
3 expanded
4 signs
------------------------------------------------------C------------------------------------------------
1 a
3 a
4 b
5 a
6 c
7 a
9 c
10 a
11 a
12 a
13 b
14 b
15 c