wherein {HEAD ~ each} of {TAIL ~ the first MISFET} and the second MISFET is an n channel MISFET, and 
of
wherein { HEAD ~ each } of { TAIL ~ the first MISFET } and the second MISFET is an n channel MISFET , and
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH