{HEAD ~ The spar} includes {TAIL ~ a female receptacle} that receives a male blade from the closeout skin assembly 
includes
{ HEAD ~ The spar } includes { TAIL ~ a female receptacle } that receives a male blade from the closeout skin assembly
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH