{HEAD ~ The values} of {TAIL ~ the excessive force threshold} and the safety force threshold may be the same or different depending upon the system and the needs of the user 
of
{ HEAD ~ The values } of { TAIL ~ the excessive force threshold } and the safety force threshold may be the same or different depending upon the system and the needs of the user
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH