A method for selecting a sequence is provided. A set of sequences are defined, each one of the sequences comprising one or more characters. A sub-set of the set of sequences are evaluated with a dynamic programing method to obtain a numeric indicia of merit. Additional sequences are added into the sub-set of sequences. The steps of defining, evaluating, and adding are repeated until the numeric indicia is substantially constant or there are no more additional sequences. One or more of the sequences are selected based on the numeric indicia.