{HEAD ~ The collapsible cargo trailer} 1 in which {TAIL ~ the forward and rear portions} of the cargo floor comprise rigid plates 
{ HEAD ~ The collapsible cargo trailer } 1 in which { TAIL ~ the forward and rear portions } of the cargo floor comprise rigid plates
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH