An outlet hood 16 is affixed to {TAIL ~ the upper portion} 18 of {HEAD ~ the column} 12 
An outlet hood 16 is affixed to { TAIL ~ the upper portion } 18 of { HEAD ~ the column } 12
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH