{HEAD ~ The signals} on the two wires from the integrated circuit are processed by {TAIL ~ a shift/latch control circuit} that is external to the integrated circuit 
are processed by
{ HEAD ~ The signals } on the two wires from the integrated circuit are processed by { TAIL ~ a shift / latch control circuit } that is external to the integrated circuit
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH