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