private String getTypeChar() {
        String typeC;

        switch (type) {
            case TYPE_6_NUM:
                typeC = TYPE_6;
                break;
            case TYPE_7_NUM:
                typeC = TYPE_7;
                break;
            case TYPE_8_NUM:
                typeC = TYPE_8;
                break;
            case TYPE_9_NUM:
                typeC = TYPE_9;
                break;
            case TYPE_10_NUM:
                typeC = TYPE_10;
                break;
            case TYPE_V_NUM:
                typeC = TYPE_V;
                break;
            case TYPE_D_NUM:
                typeC = TYPE_D;
                break;
            case TYPE_K_NUM:
                typeC = TYPE_K;
                break;
            case TYPE_T_NUM:
                typeC = TYPE_T;
                break;
            default:
                typeC = "n/a";
        }

        return typeC;
    }