The scrubber sections are interchangeable and may be connected one to the other in any of {TAIL ~ a variety} of {HEAD ~ combinations} as may be dictated by the material being scrubbed 
The scrubber sections are interchangeable and may be connected one to the other in any of { TAIL ~ a variety } of { HEAD ~ combinations } as may be dictated by the material being scrubbed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH