0, sleep, 10, 
1, , ,  
2, , , 
3, , , 
4, , , 
5, , , 
6, , , 
7, , , 
8, food, 5, 
9, call mom, 2,  
10, EWM, 2,  
11, EWM, 2,  
12, event studies, 2,  
13, variance, 6,  
14, EWM, 6,  
15, EWM, 5,  
16, seminar, 2,  
17, seminar, 1,  
18, food, 10, 
19, sleep, 10, 
20, , 10, 
21, EWM, 8,  
22, complier, 6,  
23, complier, 4, 
