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six wedges are arranged roughly as p ( p + 1) / 2 bowling pins and lie in between the branches, with each of the six ‘lead pins’ placed at the midpoint of each side of the core hexagon. The DLP optimal packings in Fig. 8 are the wedge hexagonal packings, with minor deviations in the positions of some disks, for ( k, p, a ) = (3 , 2 − 4 , 1). 

