If the articles eventually do not fall through the openings, a jet or other suitable device is provided for removing {HEAD ~ the articles} from {TAIL ~ the rim} 
If the articles eventually do not fall through the openings , a jet or other suitable device is provided for removing { HEAD ~ the articles } from { TAIL ~ the rim }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL