CrossFit Class 6/18

CrossFit Class 
Every 90 seconds for 18 minutes (3 Rounds)
Back Squat 5 (32X1)
Supinated Grip Pull Up 5-7 reps (21X1) weighted if possible
Reverse Snow Angles x15
Hollow Rocks 45 seconds

For Time:
21-15-9
Calorie Row
Burpees over the Rower