{HEAD ~ Method} for drawing {TAIL ~ a flow} of air and particulates into a vacuum cleaner 
for drawing
{ HEAD ~ Method } for drawing { TAIL ~ a flow } of air and particulates into a vacuum cleaner
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH