{HEAD ~ The system} includes {TAIL ~ an exterminating liquid supply subsystem} and an exterminating liquid distribution subsystem 
includes
{ HEAD ~ The system } includes { TAIL ~ an exterminating liquid supply subsystem } and an exterminating liquid distribution subsystem
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH