Please see attached. 

Combined events are:

2, 3, & 4
5 (heat 2) & 6
10 & 12
14, 15, & 16
17 (heat 2) & 18
29 & 30
31 & 34
35 & 36
37 (heat 2) & 38
40 & 42
45 & 46
47 (heat 2) & 48
52 & 54