{HEAD ~ The opening} of {TAIL ~ the exhaust system} may also have a tubing to allow the exhaled air to be moved even further away 
of
{ HEAD ~ The opening } of { TAIL ~ the exhaust system } may also have a tubing to allow the exhaled air to be moved even further away
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