A subassembly of a Coriolis flowmeter is fabricated from a single monolithic piece of elastic polymeric material. A player’s winnings are determined by alignment of particular indicia along one or more radii of the disks after a period of rotation. The permuter permutates, for each input sub-vector of the input vector, the input sub-vector based on a set of permutation coefficients to generate a set of permuted input sub-vectors. A sealant is used for sealing the microperforations.