{TAIL ~ Each} of {HEAD ~ the end walls} has a first end, a second end and a free side from which a horizontal plate extends transversely 
{ TAIL ~ Each } of { HEAD ~ the end walls } has a first end , a second end and a free side from which a horizontal plate extends transversely
TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH