The upwardly directed wind, generated at {HEAD ~ the blade} approaching {TAIL ~ portion} 51 as described above, raises uncut grasses at the blade approaching portion 51 
approaching
The upwardly directed wind , generated at { HEAD ~ the blade } approaching { TAIL ~ portion } 51 as described above , raises uncut grasses at the blade approaching portion 51
OTH 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