my %codon_table = (
    AAA => 'K',
    AAC => 'N',
    AAG => 'K',
    AAT => 'N',
    ACA => 'T',
    ACC => 'T',
    ACG => 'T',
    ACT => 'T',
    AGA => 'R',
    AGC => 'S',
    AGG => 'R',
    AGT => 'S',
    ATA => 'I',
    ATC => 'I',
    ATG => 'M',
    ATT => 'I',
    CAA => 'Q',
    CAC => 'H',
    CAG => 'Q',
    CAT => 'H',
    CCA => 'P',
    CCC => 'P',
    CCG => 'P',
    CCT => 'P',
    CGA => 'R',
    CGC => 'R',
    CGG => 'R',
    CGT => 'R',
    CTA => 'L',
    CTC => 'L',
    CTG => 'L',
    CTT => 'L',
    GAA => 'E',
    GAC => 'D',
    GAG => 'E',
    GAT => 'D',
    GCA => 'A',
    GCC => 'A',
    GCG => 'A',
    GCT => 'A',
    GGA => 'G',
    GGC => 'G',
    GGG => 'G',
    GGT => 'G',
    GTA => 'V',
    GTC => 'V',
    GTG => 'V',
    GTT => 'V',
    TAA => '-',
    TAC => 'Y',
    TAG => '-',
    TAT => 'Y',
    TCA => 'S',
    TCC => 'S',
    TCG => 'S',
    TCT => 'S',
    TGA => '-',
    TGC => 'C',
    TGG => 'W',
    TGT => 'C',
    TTA => 'L',
    TTC => 'F',
    TTG => 'L',
    TTT => 'F',
);