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