{TAIL ~ The treatment container} may be positionable below, at, or above {HEAD ~ ground level} 
{ TAIL ~ The treatment container } may be positionable below , at , or above { HEAD ~ ground level }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD