Each of the first slotted partitions has {TAIL ~ opposed slots} extending inwardly from opposed edges of {HEAD ~ the partition} to facilitate folding the partition 
Each of the first slotted partitions has { TAIL ~ opposed slots } extending inwardly from opposed edges of { HEAD ~ the partition } to facilitate folding the partition
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH