This combination is a good way to test your coordination and your endurance.
Jab / Cross / Hook / Duck / Hook to the body / Cross
To get better at this drill and to increase your endurance, perform the following drills.
10 Jabs
10 Jabs / Cross
10 Jab / Cross / Hook
10 Jab / Cross / Hook / Duck
10 Jab / Cross / Hook / Duck / Hook to the Body
10 Jab / Cross / Hook / Duck / Hook to the Body / Cross
Peform this routine with your other side.  If you do this workout, please post some comments on how it went for you.