{HEAD ~ The structure} 28 is a large structure having {TAIL ~ a gallery} 31 formed therein 
{ HEAD ~ The structure } 28 is a large structure having { TAIL ~ a gallery } 31 formed therein
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH