code for determining a first set of {HEAD ~ candidates} from {TAIL ~ the plurality} of candidates who have completed online certification 
from
code for determining a first set of { HEAD ~ candidates } from { TAIL ~ the plurality } of candidates who have completed online certification
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH