{TAIL ~ The pairs} of {HEAD ~ projections} 28 each form a rearward extension of a respective one of right and left fore and aft extending stiffening members 30 and 32, respectively 
{ TAIL ~ The pairs } of { HEAD ~ projections } 28 each form a rearward extension of a respective one of right and left fore and aft extending stiffening members 30 and 32 , respectively
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD 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