{TAIL ~ The process} 2 wherein {HEAD ~ the C3 mixture} is concentrated by adding the recycled isomerized product thereto 
{ TAIL ~ The process } 2 wherein { HEAD ~ the C3 mixture } is concentrated by adding the recycled isomerized product thereto
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH