A log in {TAIL ~ server} receives a query to connect through {HEAD ~ the computer network} to the subscriber server, and the log in server receives registrant identification data 
A log in { TAIL ~ server } receives a query to connect through { HEAD ~ the computer network } to the subscriber server , and the log in server receives registrant identification data
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH