WEBVTT Example of overlapping cues being rewritten to be able to signal RAP 

1 RAP here                        
00:00:00.000 --> 00:00:03.000 
First cue from 0s to 5s

1b RAP here
00:00:03.000 --> 00:00:05.000 
First cue from 0s to 5s

2
00:00:03.000 --> 00:00:05.000 
Second cue from 3s to 9s 

2b RAP here
00:00:05.000 --> 00:00:08.000 
Second cue from 3s to 9s 

2c RAP here
00:00:08.000 --> 00:00:09.000 
Second cue from 3s to 9s

3
00:00:08.000 --> 00:00:09.000 
3rd cue from 8s to 14s

3b RAP here
00:00:09.000 --> 00:00:10.000 
3rd cue from 8s to 14s

3c RAP here
00:00:10.000 --> 00:00:12.000 
3rd cue from 8s to 14s

4
00:00:10.000 --> 00:00:12.000
4th cue from 10s to 18s

3d RAP here
00:00:12.000 --> 00:00:14.000 
3rd cue from 8s to 14s

4b
00:00:12.000 --> 00:00:14.000
4th cue from 10s to 18s

5
00:00:12.000 --> 00:00:14.000
5th cue from 12s to 24s

4c RAP here
00:00:14.000 --> 00:00:16.000
4th cue from 10s to 18s

5b
00:00:14.000 --> 00:00:16.000
5th cue from 12s to 24s

4d RAP here
00:00:16.000 --> 00:00:18.000
4th cue from 10s to 18s

5b
00:00:16.000 --> 00:00:18.000
5th cue from 12s to 24s

6
00:00:16.000 --> 00:00:18.000
6th cue from 16s to 26s

5c RAP here
00:00:18.000 --> 00:00:24.000
5th cue from 12s to 24s

6b 
00:00:18.000 --> 00:00:24.000
6th cue from 16s to 26s

6c 
00:00:24.000 --> 00:00:26.000
6th cue from 16s to 26s