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