{HEAD ~ a third N channel MOS transistor} connected between the other conductive terminal of said ;third P channel MOS transistor and {TAIL ~ the ground potential}, 
connected between
{ HEAD ~ a third N channel MOS transistor } connected between the other conductive terminal of said ; third P channel MOS transistor and { TAIL ~ the ground potential } ,
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH