Each second slotted partition 14 has a first or bottom edge 18, {HEAD ~ a second or top opposed edge} 20 and a pair of {TAIL ~ side edges} 22 
Each second slotted partition 14 has a first or bottom edge 18 , { HEAD ~ a second or top opposed edge } 20 and a pair of { TAIL ~ side edges } 22
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH