{HEAD ~ Each device} 32 is held on the fixture by {TAIL ~ a vacuum} in the headspace above the device 32 
is held by
{ HEAD ~ Each device } 32 is held on the fixture by { TAIL ~ a vacuum } in the headspace above the device 32
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH