{HEAD ~ The controller} may control {TAIL ~ charging} and discharging in accordance with measurements from voltage sensors or may convey information from a voltage sensors to the central controller and receive charging and discharging commands from the central controller 
control
{ HEAD ~ The controller } may control { TAIL ~ charging } and discharging in accordance with measurements from voltage sensors or may convey information from a voltage sensors to the central controller and receive charging and discharging commands from the central controller
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH