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