A New Result on Comma-Free Codes of Even Word-Length

Comma-free codes were first introduced by Crick, Griffith and Orgel [1] in 1957 as a possible genetic coding scheme for protein synthesis. The general mathematical setting of such codes was presented by Golomb, Gordon and Welch [3], and the biochemical and mathematical aspects of the problem were later summarized and extended by Golomb, Welch and Delbruck [4].