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