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