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