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