{TAIL ~ The main portion} includes a lowermost floor, {HEAD ~ corner posts}, lower peripheral perches, a pair of lower internal perches, an uppermost floor, upper peripheral perches, a pair of upper internal perches, and a ceiling 
{ TAIL ~ The main portion } includes a lowermost floor , { HEAD ~ corner posts } , lower peripheral perches , a pair of lower internal perches , an uppermost floor , upper peripheral perches , a pair of upper internal perches , and a ceiling
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH