{HEAD ~ These structures} 12 and 13, extend upright throughout substantially the entire height of {TAIL ~ the side wall} 11 
{ HEAD ~ These structures } 12 and 13 , extend upright throughout substantially the entire height of { TAIL ~ the side wall } 11
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH