{HEAD ~ The water transport unit} includes {TAIL ~ first and second portions} in a manner similar to that described previously 
includes
{ HEAD ~ The water transport unit } includes { TAIL ~ first and second portions } in a manner similar to that described previously
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH