If the verification system retrieved the proper record the client downloads {TAIL ~ the audio or video verification file} to their client computer over {HEAD ~ the Internet} 
If the verification system retrieved the proper record the client downloads { TAIL ~ the audio or video verification file } to their client computer over { HEAD ~ the Internet }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD