The first subcircuit and the third subcircuit are configured to pull the first node and the second node, respectively, to a common precharge voltage in response to a first state of the clock signal in {HEAD ~ order} to pass {TAIL ~ the clock signal} 
to pass
The first subcircuit and the third subcircuit are configured to pull the first node and the second node , respectively , to a common precharge voltage in response to a first state of the clock signal in { HEAD ~ order } to pass { TAIL ~ the clock signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL