a second opposing electrode arranged in {HEAD ~ opposition} to {TAIL ~ the second voltage application electrode}; and 
to
a second opposing electrode arranged in { HEAD ~ opposition } to { TAIL ~ the second voltage application electrode } ; and
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH