{HEAD ~ The main conduit portion} includes {TAIL ~ a long pipeline} formed of steel pipes, which extends along the seafloor to near the buoy station, and in a J curve up to the buoy 
includes
{ HEAD ~ The main conduit portion } includes { TAIL ~ a long pipeline } formed of steel pipes , which extends along the seafloor to near the buoy station , and in a J curve up to the buoy
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH