{HEAD ~ The combination} reduces {TAIL ~ the more serious effects} of the low frequency discharge on the heart 
reduces
{ HEAD ~ The combination } reduces { TAIL ~ the more serious effects } of the low frequency discharge on the heart
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH