private int tr_167(char ch)
    {
        if(cheq(ch,'u')) return 31;
        if(cheq(ch,'t')) return 149;
        if(chin(ch,' ','9')) return 57;
        if(chin(ch,'\t','\n')) return 57;
        if(chin(ch,'v','~')) return 57;
        if(chin(ch,';','s')) return 57;
        return 0;
    }