Workout

Warm-up (600)
400 swim
...50 free/50 drill
200 kick

Set (800)
2 rounds
200 free on 3:00
2 x 100 IM on 2:00
…1 drill/1 swim

Set (2000)
2 rounds 
4 x 50 on 1:15
…all kick
200 free build on 2:45
4 x 100 on 1:30
...descend 1-4
200 hard on 2:30

Cool-down (100)
100 EZ