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(4, 8, 2) ALL distance distributions for EXTERNAL point
(2, 8, 2) has 0 possible DDs: {}
(3, 8, 2) has 1 possible DDs: {[0, 6, 0, 2]}
(4, 8, 2) has 2 possible DDs: {[0, 3, 3, 1, 1], [0, 4, 0, 4, 0]}