{HEAD ~ This inversion} of {TAIL ~ the bars} can be used to cause the bars to penetrate or impale bags of trash 
{ HEAD ~ This inversion } of { TAIL ~ the bars } can be used to cause the bars to penetrate or impale bags of trash
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH