{TAIL ~ The collection container} may be filled with {HEAD ~ the material} and separating the material to form the selected fraction 
{ TAIL ~ The collection container } may be filled with { HEAD ~ the material } and separating the material to form the selected fraction
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH