{HEAD ~ Controller} 140 consists of {TAIL ~ a single, thin, elliptical panel}, 142, whose major and minor axes are slightly smaller than those of front wall 134 
consists of
{ HEAD ~ Controller } 140 consists of { TAIL ~ a single , thin , elliptical panel } , 142 , whose major and minor axes are slightly smaller than those of front wall 134
HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH