Furthermore, in {TAIL ~ certain embodiments}, the number of gates used and {HEAD ~ the fanout} on the signals may be limited, which may provide for scalability and low area usage 
Furthermore , in { TAIL ~ certain embodiments } , the number of gates used and { HEAD ~ the fanout } on the signals may be limited , which may provide for scalability and low area usage
OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH