Burpees, Wall Balls, Sit-ups

This looked like a tough wod.  And, it was:

Amrap 9 min:

1 Burpee
3 Wall Balls
5 Sit-ups

3 Burpees
5 Wall Balls
7 Sit-ups

5 Burpees
7 Wall Balls
9 Sit-ups

and so on for 9 min.

Rounds:  I finished the round of 13 burpees, 15 wall balls, and 18 situps