1sub_fun_1_1
2TRAPPED
3sub_fun_1_2
4TRAPPED
5sub_fun_1_3
6TRAPPED
7sub_fun_1_4
8TRAPPED
9sub_fun_2_1
10TRAPPED
11sub_fun_2_2
12TRAPPED
13sub_fun_2_1
14TRAPPED
15TRAPPED
16sub_fun_2_2
17TRAPPED
18RETURNED 13
19