{HEAD ~ The construction} of the filter and {TAIL ~ the materials} used for it are decisive for the magnitude of the electric strength 
of
{ HEAD ~ The construction } of the filter and { TAIL ~ the materials } used for it are decisive for the magnitude of the electric strength
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH