a reset element that is turned on or off by {HEAD ~ a reset signal} and that resets the input node in {TAIL ~ an on state}, 
a reset element that is turned on or off by { HEAD ~ a reset signal } and that resets the input node in { TAIL ~ an on state } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH