{HEAD ~ The amount} of current shunted is determined by {TAIL ~ the highest voltage level} of the control buses 30a a 
{ HEAD ~ The amount } of current shunted is determined by { TAIL ~ the highest voltage level } of the control buses 30a a
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH