{HEAD ~ a plurality} of electrodes in an array and adapted to be in {TAIL ~ electrical contact} with the body 
adapted to be in
{ HEAD ~ a plurality } of electrodes in an array and adapted to be in { TAIL ~ electrical contact } with the body
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH