The active door lock includes a dead bolt and {HEAD ~ a lever} for {TAIL ~ extensible locking engagement} with a strike plate on the inactive door 
for
The active door lock includes a dead bolt and { HEAD ~ a lever } for { TAIL ~ extensible locking engagement } with a strike plate on the inactive door
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH