performing {HEAD ~ a voice matching operation} between the speaker identity candidates and the templates in the biometric corpus to obtain {TAIL ~ speaker identity candidate match scores} 
performing { HEAD ~ a voice matching operation } between the speaker identity candidates and the templates in the biometric corpus to obtain { TAIL ~ speaker identity candidate match scores }
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL