{HEAD ~ The size} of {TAIL ~ hole} of sifting device SE2 is in a range of, e.g., 4 6 mm 
of
{ HEAD ~ The size } of { TAIL ~ hole } of sifting device SE2 is in a range of , e.g. , 4 6 mm
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