Each object has a driven portion including {HEAD ~ a moveable section} pivotably supported on {TAIL ~ the object} 
pivotably supported on
Each object has a driven portion including { HEAD ~ a moveable section } pivotably supported on { TAIL ~ the object }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL