{HEAD ~ Positive terminal} 214 and be coupled to {TAIL ~ a conductive element} 216 and configured to transport the electrons to a location downstream of the electrodes 
coupled to
{ HEAD ~ Positive terminal } 214 and be coupled to { TAIL ~ a conductive element } 216 and configured to transport the electrons to a location downstream of the electrodes
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH