The assembly comprises a plurality of first slotted partitions intersecting with {HEAD ~ a plurality} of {TAIL ~ second slotted partitions} to form a collapsible matrix 
of
The assembly comprises a plurality of first slotted partitions intersecting with { HEAD ~ a plurality } of { TAIL ~ second slotted partitions } to form a collapsible matrix
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH