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