{HEAD ~ The base} 12 defines {TAIL ~ four fastener holes} 19 in the bottom surface 18 thereof engaging the posts 20 
{ HEAD ~ The base } 12 defines { TAIL ~ four fastener holes } 19 in the bottom surface 18 thereof engaging the posts 20
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH