#include <bits/stdc++.h>
#include <iostream>

using namespace std;

string words, str1, str2, str3;

void read_string() {
    int n, flag = 0;
    char caracter;

    cin >> n;

    //int spaces = n;

    for (int i = 0; i < words.size(); ++i) {

        if (caracter == '#' || caracter == ' ') {
            if (flag == 0) {
                str1.push_back(caracter);
            } else {
                str3.push_back(caracter);
            }
        } else {
            str2.push_back(caracter);
        }
    }
    cout << str3 << str2 << str1 << endl;
}

int main() {
    int quant, i;
    int n;
    cin >> quant;

    for (i = 0; i < quant; ++i) {
        cin >> n;
        cin >> words;
        cout << words << endl;
        //read_string();
    }

    return 0;
}