{HEAD ~ Each current control stage} includes {TAIL ~ an operational amplifier} , a pass transistor , a sense resistor , and a feedback resistor  
includes
{ HEAD ~ Each current control stage } includes { TAIL ~ an operational amplifier } , a pass transistor , a sense resistor , and a feedback resistor
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH