{HEAD ~ a bypass path} bypassing {TAIL ~ exhaust gas} from an upstream side of the turbine of the high pressure supercharger to a downstream side of the turbine; and 
bypassing
{ HEAD ~ a bypass path } bypassing { TAIL ~ exhaust gas } from an upstream side of the turbine of the high pressure supercharger to a downstream side of the turbine ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH