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