{HEAD ~ The articulated trackway sections} permit {TAIL ~ engagement} of a carrier and subsequent pulling of the carrier from the descending elevator 
permit
{ HEAD ~ The articulated trackway sections } permit { TAIL ~ engagement } of a carrier and subsequent pulling of the carrier from the descending elevator
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH