{HEAD ~ The surfaces} of the rotor that are exposed to {TAIL ~ the gases} of combustion are provided with a plurality of pockets 
{ HEAD ~ The surfaces } of the rotor that are exposed to { TAIL ~ the gases } of combustion are provided with a plurality of pockets
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH