{HEAD ~ each} of {TAIL ~ gate electrodes} of said second P channel MOS transistor and said first N channel MOS transistor receives said input signal 
of
{ HEAD ~ each } of { TAIL ~ gate electrodes } of said second P channel MOS transistor and said first N channel MOS transistor receives said input signal
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH