The alternative is {TAIL ~ a Brute Force attack search} on {HEAD ~ the TST function} to find a success  
The alternative is { TAIL ~ a Brute Force attack search } on { HEAD ~ the TST function } to find a success
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH