#include<bits/stdc++.h>
using namespace std;
struct people
{
    int id;
    int num[55];
    bool have = 1;
};
int killa(int i,int num,people *arr)
{
    for (int j = 1; j <= num; j++)
    {
        if (arr[arr[i].num[j]].have)
        {
            arr[arr[i].num[j]].have = 0;
            return arr[i].num[j];
        }
    }
}
int main()
{
    int n; cin >> n;
    while (n--)
    {
        int num,t,flag=0; cin >> num;
        people arr[55];
        for (int i = 1; i <= num; i++)
        {
            cin >> arr[i].id;
            if (arr[i].id == 1)
            {
                t = i;//找到狼人序号
            }
        }
        for (int i = 1; i <= num; i++)
        {
            for (int j = 1; j <= num; j++)
            {
                cin >> arr[i].num[j];
            }
        }
        int temp = arr[t].num[1];
        arr[arr[t].num[1]].have = 0;
        for (int k = 1; k < num - 2; k++)
        {
            temp=killa(temp,num,arr);
            if (arr[t].have == 0)
            {
                flag = 1;
                break;
            }
        }
        if (arr[t].have)
            cout << "langren" << endl;
        else
            cout << "lieren" << endl;
    }
}