Ring Dips
21-15-9
4:14

then

With a continuously running clock:

1st min: Squats up to 60
2nd min: Pull-ups remaining to reach 60 - bands
3rd min: Squats up to 60
4th min: Push-ups remaining to reach 60
5th min: Squats
6th min: Pull-ups ETC

Continue until you cannot finish 60 reps. Minimum of 12 rounds.