{TAIL ~ The additive} will then enhance {HEAD ~ the operation} of diesel fuel combustion systems by improving, for example, wear inhibition, lubricant oil life, and fuel economy 
{ TAIL ~ The additive } will then enhance { HEAD ~ the operation } of diesel fuel combustion systems by improving , for example , wear inhibition , lubricant oil life , and fuel economy
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH