The heated air then passes through {HEAD ~ the flow} of {TAIL ~ grain} in each of the columns 26 so as to heat and remove moisture from the grain 
of
The heated air then passes through { HEAD ~ the flow } of { TAIL ~ grain } in each of the columns 26 so as to heat and remove moisture from the grain
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH