#include <iostream>
using namespace std;
int a[1000001][4];
int main()
{
    int t;
    cin >> t;
    int s = 0, ss = 0;
    for (int i = 1; i <= t; i++)
        cin >> a[i][1] >> a[i][2] >> a[i][3];
    for (int i = 1; i <= t; i++)
    {
        s = 0, ss = 0;
        for (int j = 1; j <= a[i][1]; j++)
        {
            for (int k = 1; k <= a[i][2]; k++)
            {
                if (j == k && s < a[i][3] && ss <= min(a[i][1], a[i][2]))
                    cout << "S", s++, ss++;
                else if (s + min(a[i][1], a[i][2]) <= a[i][3] && a[i][3] > min(a[i][1], a[i][2]))
                    cout << "S", s++;
                else
                    cout << ".";
            }
            cout << endl;
        }
        cout << endl;
    }
}

测试了好多遍不知道哪里有误，请大佬们指正，谢谢！