Calculations of the frequency of possible codons produced using a heteropolymer composed of a ratio of 1A:5C. There is a 1/6 possibility for an A and a 5/6 chance for a C to occupy each position in the triplet. By examining the percentages of amino acids incorporated into the protein synthesized, probable base composition for some codons can be proposed. Proline appears 69% of the time, so it may be encoded by CCC (57.9%) and one codon consisting of 2C:1A (11.6%). Histidine, at 14%, is probably coded by one 2C:1A (11.6%) and one 1C:2A (2.3%). Threonine, at 12%, is likely coded by only one 2C:1A.