The apparatus 3, wherein said preferred order is {HEAD ~ a preferred order} for {TAIL ~ interpretation} by a human 
for
The apparatus 3 , wherein said preferred order is { HEAD ~ a preferred order } for { TAIL ~ interpretation } by a human
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH