A system replicates Internet websites on {TAIL ~ a large number} of user computers having {HEAD ~ browsers} 
A system replicates Internet websites on { TAIL ~ a large number } of user computers having { HEAD ~ browsers }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD