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