I have the following mysql table:

```
Start Time  End Time    Duration
17:00:02    17:00:31    00:00:29    
17:02:30    17:02:41    00:00:11    
17:11:25    17:15:25    00:04:00    
17:15:37    17:17:51    00:02:14    
17:18:08    17:20:17    00:02:09    
17:20:35    17:20:37    00:00:02    
17:20:39    17:21:25    00:00:46    
17:21:33    17:22:02    00:00:29

```

I need to merge the rows whenever the duration is less than 2 minutes: which should look like this:

```
Start Time  End Time    Duration
17:00:02    17:15:25    00:04:40    
17:15:37    17:17:51    00:02:14    
17:18:08    17:20:17    00:02:09    
17:20:35    17:22:02    00:01:17

```

How could this be done? 
You can assume the start time/end time/duration are already in unix timestamp.