{HEAD ~ A plurality} of {TAIL ~ rectangular notches} 32 extend inwardly from the second edge 20 of the partition 14 
{ HEAD ~ A plurality } of { TAIL ~ rectangular notches } 32 extend inwardly from the second edge 20 of the partition 14
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH