Workout

Warm-Up (600) 
300 swim, 200 drill
100 IM

Set (600)  
2 rounds
3 x 100 on 2:00
...kick, drill, swim x 2

Set (1100)  
2 rounds
3 x 100 build
...1:40, 1:30, 1:20
200 (fast) on 2:45
50 (easy) on 1:15

Set (600)  
Pull 3 x 200 on 2:45
...odd 3cb
...even 5cb

Cool-down (300)
100 kick)
200 EZ