{HEAD ~ The signal device} consists of {TAIL ~ a piece} of strong wire or light rod with an eye formed on the rear end and a signal flag of flexible material attached near the front end 
consists of
{ HEAD ~ The signal device } consists of { TAIL ~ a piece } of strong wire or light rod with an eye formed on the rear end and a signal flag of flexible material attached near the front end
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH