The third AND circuit 34 receives {HEAD ~ the victim signal} and {TAIL ~ two inverted aggressor signals} 
The third AND circuit 34 receives { HEAD ~ the victim signal } and { TAIL ~ two inverted aggressor signals }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL