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