An outer portion or {HEAD ~ tab} of {TAIL ~ each folded partition} is secured to one of the other partitions to prevent disassembly of the matrix 
of
An outer portion or { HEAD ~ tab } of { TAIL ~ each folded partition } is secured to one of the other partitions to prevent disassembly of the matrix
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH