A plurality of cylinders received in said well supporting {TAIL ~ a frame structure} comprised of a plurality of channel member positions to be received in {HEAD ~ said canals} 
A plurality of cylinders received in said well supporting { TAIL ~ a frame structure } comprised of a plurality of channel member positions to be received in { HEAD ~ said canals }
OTH OTH OTH OTH OTH OTH OTH OTH OTH 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