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