{HEAD ~ A sequencer} 12 mechanically supports {TAIL ~ the parabolic reflector} 2 and is capable of turning the reflector about a vertical axis so that its beam can rotate to any direction in a horizontal plane through the sequencer 
mechanically supports
{ HEAD ~ A sequencer } 12 mechanically supports { TAIL ~ the parabolic reflector } 2 and is capable of turning the reflector about a vertical axis so that its beam can rotate to any direction in a horizontal plane through the sequencer
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH