if(!strcmp(codon,"TTT"))
        return 'F';
    if(!strcmp(codon,"TTC"))
        return 'F';
    if(!strcmp(codon,"TTA"))
        return 'L';
    if(!strcmp(codon,"TTG"))
        return 'L';
    /* TC ser */
    if(!strcmp(codon,"TCT"))
        return 'S';
    if(!strcmp(codon,"TCC"))
        return 'S';
    if(!strcmp(codon,"TCA"))
        return 'S';
    if(!strcmp(codon,"TCG"))
        return 'S';
    /* TA tyr,stop */
    if(!strcmp(codon,"TAT"))
        return 'Y';
    if(!strcmp(codon,"TAC"))
        return 'Y';
    if(!strcmp(codon,"TAA"))
        return '*';
    if(!strcmp(codon,"TAG"))
        return '*';
    /* TG cys,stop,trp */
    if(!strcmp(codon,"TGT"))
        return 'C';
    if(!strcmp(codon,"TGC"))
        return 'C';
    if(!strcmp(codon,"TGA"))
        return '*';
    if(!strcmp(codon,"TGG"))
        return 'W';
    /* CT leu */
    if(!strcmp(codon,"CTT"))
        return 'L';
    if(!strcmp(codon,"CTC"))
        return 'L';
    if(!strcmp(codon,"CTA"))
        return 'L';
    if(!strcmp(codon,"CTG"))
        return 'L';
    /* CC pro */
    if(!strcmp(codon,"CCT"))
        return 'P';
    if(!strcmp(codon,"CCC"))
        return 'P';
    if(!strcmp(codon,"CCA"))
        return 'P';
    if(!strcmp(codon,"CCG"))
        return 'P';
    /* CA his,gln */
    if(!strcmp(codon,"CAT"))
        return 'H';
    if(!strcmp(codon,"CAC"))
        return 'H';
    if(!strcmp(codon,"CAA"))
        return 'Q';
    if(!strcmp(codon,"CAG"))
        return 'Q';
    /* CG arg */
    if(!strcmp(codon,"CGT"))
        return 'R';
    if(!strcmp(codon,"CGC"))
        return 'R';
    if(!strcmp(codon,"CGA"))
        return 'R';
    if(!strcmp(codon,"CGG"))
        return 'R';
    /* AT ile,met */
    if(!strcmp(codon,"ATT"))
        return 'I';
    if(!strcmp(codon,"ATC"))
        return 'I';
    if(!strcmp(codon,"ATA"))
        return 'I';
    if(!strcmp(codon,"ATG"))
        return 'M';
    /* AC thr */
    if(!strcmp(codon,"ACT"))
        return 'T';
    if(!strcmp(codon,"ACC"))
        return 'T';
    if(!strcmp(codon,"ACA"))
        return 'T';
    if(!strcmp(codon,"ACG"))
        return 'T';
    /* AA asn,lys */
    if(!strcmp(codon,"AAT"))
        return 'N';
    if(!strcmp(codon,"AAC"))
        return 'N';
    if(!strcmp(codon,"AAA"))
        return 'K';
    if(!strcmp(codon,"AAG"))
        return 'K';
    /* AG ser,arg */
    if(!strcmp(codon,"AGT"))
        return 'S';
    if(!strcmp(codon,"AGC"))
        return 'S';
    if(!strcmp(codon,"AGA"))
        return 'R';
    if(!strcmp(codon,"AGG"))
        return 'R';
    /* GT val */
    if(!strcmp(codon,"GTT"))
        return 'V';
    if(!strcmp(codon,"GTC"))
        return 'V';
    if(!strcmp(codon,"GTA"))
        return 'V';
    if(!strcmp(codon,"GTG"))
        return 'V';
    /* GC ala */
    if(!strcmp(codon,"GCT"))
        return 'A';
    if(!strcmp(codon,"GCC"))
        return 'A';
    if(!strcmp(codon,"GCA"))
        return 'A';
    if(!strcmp(codon,"GCG"))
        return 'A';
    /* GA asp,glu */
    if(!strcmp(codon,"GAT"))
        return 'D';
    if(!strcmp(codon,"GAC"))
        return 'D';
    if(!strcmp(codon,"GAA"))
        return 'E';
    if(!strcmp(codon,"GAG"))
        return 'E';
    /* GT gly */
    if(!strcmp(codon,"GGT"))
        return 'G';
    if(!strcmp(codon,"GGC"))
        return 'G';
    if(!strcmp(codon,"GGA"))
        return 'G';
    if(!strcmp(codon,"GGG"))
        return 'G';
    puts(codon);