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use strict; use warnings; ... dd \@solutions;
[["\$", "p", 0], ["\@", "p", 0], ["%", "p", 0]], [["\$", "p", 0], ["\@", "p", 0], ["%", "p", 1]], ... [["\$", "p", 0], ["\@", "p", 0], ["%", "r", 0]], ... ... total 512 solutions