D

char a[1000][1000];

int main()
{
    int n, m;
    char d;
    bool b;
    string s;
    cin >> n >> m;
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++)
            cin >> d, a[i * 2][j * 2] = d;
    for(int i = 0; i < 2 * n; i += 2)
        for(int j = 0; j < 2 * m; j += 2)
            if (a[i][j] == '#')
            {
                a[i][j + 1] = ((a[i][j + 2] == '#') ? '-' : ' ');
                a[i + 1][j] = ((a[i + 2][j] == '#') ? '|' : ' ');
                if (a[i + 2][j + 2] == '#') a[i + 1][j + 1] = (a[i + 1][j + 1] && a[i + 1][j + 1] != '\\' ? 'X' : '\\');
                if (i && a[i - 2][j + 2] == '#') a[i - 1][j + 1] = (a[i - 1][j + 1] && a[i - 1][j + 1] != '/'? 'X' : '/');
                if (j && a[i + 2][j - 2] == '#') a[i + 1][j - 1] = (a[i + 1][j - 1] && a[i + 1][j - 1] != '/' ? 'X' : '/');
                if (i && j && a[i - 2][j - 2] == '#') a[i - 1][j - 1] = (a[i - 1][j - 1] && a[i - 1][j - 1] != '\\' ? 'X' : '\\');
            }
    for (int i = 0; i < 2 * n; i++)
    {
        b = 0;
        s = "";
        for (int j = 0; j < 2 * m; j++)
            s += (a[i][j] ? a[i][j] : ' '), b = b || (a[i][j] && a[i][j] != ' ');
        if (b)
        {
            for (; s[s.size() - 1] == ' ' || !s[s.size() - 1]; s.resize(s.size() - 1));
            cout << s <<  endl;
        }
    }
    return 0;
}