private int tr_77(char ch)
    {
        if(chin(ch,'f','~')) return 57;
        if(chin(ch,';','d')) return 57;
        if(chin(ch,' ','9')) return 57;
        if(cheq(ch,'e')) return 75;
        if(chin(ch,'\t','\n')) return 57;
        return 0;
    }