#include <iostream>
using namespace std;

template <class T>
struct GoodCopy {
    // 在此处补充你的代码
    GoodCopy() {}
    void operator()(T * arr, T * arrEnd, T * brr){
        int len = arrEnd - arr;
        for (arrEnd = arrEnd - 1;arrEnd != arr - 1; --arrEnd) {
            brr[--len] = * arrEnd;
            
        }
    }
};

int a[200];
int b[200];
string c[200];
string d[200];

template <class T>
void Print(T s, T e) {
    for (; s != e; ++s)
        cout << *s << ",";
    cout << endl;
}

int main()
{
    int t;
    cin >> t;
    while (t--) {
        int m;
        cin >> m;
        for (int i = 0;i < m; ++i)
            cin >> a[i];
        GoodCopy<int>()(a, a + m, b);
        Print(b, b + m);
        GoodCopy<int>()(a, a + m, a + m / 2);
        Print(a + m / 2, a + m / 2 + m);

        for (int i = 0;i < m; ++i)
            cin >> c[i];
        GoodCopy<string>()(c, c + m, d);
        Print(c, c + m);
        GoodCopy<string>()(c, c + m, c + m / 2);
        Print(c + m / 2, c + m / 2 + m);
    }
    return 0;
}