Each first slot 26 has an introductory triangular cutout 28 proximate the first edge 18 of {TAIL ~ the partition} 14 and a hook 30 located in {HEAD ~ the triangular cutout} 28 as shown in FIG 2 
Each first slot 26 has an introductory triangular cutout 28 proximate the first edge 18 of { TAIL ~ the partition } 14 and a hook 30 located in { HEAD ~ the triangular cutout } 28 as shown in FIG 2
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH