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