{HEAD ~ Cargo} can be loaded onto the deck element and underneath {TAIL ~ the deck element} on the floor of the trailer 
loaded underneath
{ HEAD ~ Cargo } can be loaded onto the deck element and underneath { TAIL ~ the deck element } on the floor of the trailer
HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH