The air volume of the respective second exhaust gas turbocharger of the first and {HEAD ~ the second sets} is greater than {TAIL ~ the air volume} of the first exhaust gas turbocharger of the first and second sets 
The air volume of the respective second exhaust gas turbocharger of the first and { HEAD ~ the second sets } is greater than { TAIL ~ the air volume } of the first exhaust gas turbocharger of the first and second sets
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH