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