{HEAD ~ The combination} 2 in which the central portion of each tongue is substantially parallel to {TAIL ~ the web} of the associated cross beam 
{ HEAD ~ The combination } 2 in which the central portion of each tongue is substantially parallel to { TAIL ~ the web } of the associated cross beam
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH