{HEAD ~ A work station system} comprises {TAIL ~ a frame substructure} for holding aloft a horizontal axial shaft  
comprises
{ HEAD ~ A work station system } comprises { TAIL ~ a frame substructure } for holding aloft a horizontal axial shaft
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH