{HEAD ~ The process} 1 wherein {TAIL ~ the isomerizable hydrocarbons} comprise normal paraffins having from 4 to 7 carbon atoms per molecule 
{ HEAD ~ The process } 1 wherein { TAIL ~ the isomerizable hydrocarbons } comprise normal paraffins having from 4 to 7 carbon atoms per molecule
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH