first and second N channel MOS transistors connected in {HEAD ~ parallel} between {TAIL ~ the other conductive terminal} of said second P channel MOS transistor and a ground potential 
between
first and second N channel MOS transistors connected in { HEAD ~ parallel } between { TAIL ~ the other conductive terminal } of said second P channel MOS transistor and a ground potential
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH