{HEAD ~ A combined lock device} comprised of {TAIL ~ a key lock} linked up with at least one combination lock 
{ HEAD ~ A combined lock device } comprised of { TAIL ~ a key lock } linked up with at least one combination lock
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH