All kicks, except for those noted under “Illegal Strikes” below.
Spinning back fists with the heel of fist or the back of the hand.
Knees are allowed (except to the head for amateur fighters).
Clinching is allowed for 3-5 seconds, as long as you are working.
Catching/trapping the leg is allowed as long as you counter quickly. Do not hold onto the leg. You may counter your opponent with punches or kicks above the knee.