{HEAD ~ Such an arrangement} would not have {TAIL ~ a vent follower} as illustrated in FIGS 5 through 7 
have
{ HEAD ~ Such an arrangement } would not have { TAIL ~ a vent follower } as illustrated in FIGS 5 through 7
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH