{HEAD ~ The circuit} 12 further comprising means for receiving {TAIL ~ a transmission signal} indicating that transmission of said signal from said input terminal to said output terminal should occur 
{ HEAD ~ The circuit } 12 further comprising means for receiving { TAIL ~ a transmission signal } indicating that transmission of said signal from said input terminal to said output terminal should occur
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH