Bit Mask output final?

vector<string> draw_card(const Carta& carta){


/*
    int16_t a0 = 0b 0000 0000 0000 0000;
                 0x 0    0    0    0
    int16_t a1 = 0b 0000 0100 0000 0000;
                 0x 0    4    0    0
    int16_t a2 = 0b 0000 1010 0000 0000;
                 0x 0    A    0    0
    int16_t a3 = 0b 0001 1111 0000 0000;
                 0x 1    F    0    0
    int16_t a4 = 0b 0010 0000 1000 0000;
                 0x 2    0    8    0
    int16_t a5 = 0b 0100 0000 0100 0000;
                 0x 4    0    4    0
    int16_t a6 = 0b 0000 0000 0000 0000;
                 0x 0    0    0    0
*/

    vector<uint16_t> middle_matrix;

    middle_matrix.push_back(0x0000); //0
    middle_matrix.push_back(0x0400); //1024
    middle_matrix.push_back(0x0A00); //2560
    middle_matrix.push_back(0x1F00); //7936
    middle_matrix.push_back(0x2080); //8320
    middle_matrix.push_back(0x4040); //16448
    middle_matrix.push_back(0x0000); //0

    // first line of the matrix is
    vector<string> v;
    v.push_back("|-----------|");

    string nome_seme = create_semi(carta.seme);
    string nome_valore = create_nome_valore(carta.valore);

    vector<string> carta_grafica;

    string init_string = "|           |";
    for(unsigned int i = 0; i < init_string.size(); ++i){
        unsigned int valore_offset = 1;
        unsigned int seme_offset = nome_valore.size() + valore_offset + 1;
        if(i >= valore_offset && i < nome_valore.size() + valore_offset){
            init_string[i] = nome_valore[i-valore_offset];
        }

        if(i >= seme_offset && i <= nome_seme.size() + seme_offset - 1){
            init_string[i] = nome_seme[i-seme_offset];
        }

    }

    v.push_back(init_string);

    for(unsigned int i = 0; i < middle_matrix.size(); ++i){
        string line = "|";
        for(uint16_t mask = 0x8000; mask != 0x0010; mask >>= 1){
            cout << mask << " " << middle_matrix[i] << " ";
            if(middle_matrix[i] & mask){
                line += "*";
            }
            else{
                line += " ";
            }
        }
        line += "|";
        v.push_back(line);
    }


    //for (string x : v){cout << x << endl;}
    for(unsigned int i = 0; i < v.size(); ++i){
        cout << v[i] << endl;
    }

    return v;
}

/*OUTPUT
|Asso picche|
|           |
|     *     |
|    * *    |
|   *****   |
|  *     *  |
| *       * |
|           |
*/