{TAIL ~ The conditioning heads} can be arranged in various combinations and the ejection tube set to {HEAD ~ various control settings} 
{ TAIL ~ The conditioning heads } can be arranged in various combinations and the ejection tube set to { HEAD ~ various control settings }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD