Each of the partitions has {TAIL ~ hooks} and {HEAD ~ notches} to help hold the assembly together 
Each of the partitions has { TAIL ~ hooks } and { HEAD ~ notches } to help hold the assembly together
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH