{HEAD ~ code} for determining {TAIL ~ a second set} of candidates from the first set of candidates who have passed testing procedures; and 
for determining
{ HEAD ~ code } for determining { TAIL ~ a second set } of candidates from the first set of candidates who have passed testing procedures ; and
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH