For time:
Powerclean 21 RM weight (weight you can lift 21 reps but not 22)
50 sit-ups
Powerclean 18 reps same weight as above
50 sit-ups
Powerclean 15 reps same weight
50 sit-ups
Powerclean 12 reps same weight
There is no rest here other than the sit-ups.
Relative to the powerclean the sit-up is a rest.
Move deliberately, and with control from one exercise to the next.
Perform the sit-ups slowly and calmly to recover from the powerclean.
On completion of the sit-ups move directly to the next set of powercleans.