{TAIL ~ A first wire} in the two wire output port is a data wire and {HEAD ~ a second wire} in said the wire output port is a clock wire 
{ TAIL ~ A first wire } in the two wire output port is a data wire and { HEAD ~ a second wire } in said the wire output port is a clock wire
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH