For {HEAD ~ use} with {TAIL ~ a hand held power tool} 12, the improvement further comprising: 
For { HEAD ~ use } with { TAIL ~ a hand held power tool } 12 , the improvement further comprising :
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH