{HEAD ~ The operational amplifier} also includes {TAIL ~ source transistors} for pushing the output and sink transistors for pulling the output to obtain particular output voltage swing 
includes
{ HEAD ~ The operational amplifier } also includes { TAIL ~ source transistors } for pushing the output and sink transistors for pulling the output to obtain particular output voltage swing
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH