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