{TAIL ~ The synthetic fiber} is present in the insulation paper in {HEAD ~ an amount} between approximately 2 and 25 percent by weight 
{ TAIL ~ The synthetic fiber } is present in the insulation paper in { HEAD ~ an amount } between approximately 2 and 25 percent by weight
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH