#include<bits/stdc++.h>
using namespace std;
const int maxn = 55;
int T, n;
int val[maxn];
int die[maxn];
int vis[maxn][maxn];

int main()
{
    scanf("%d", &T);
    while(T--)
    {
        scanf("%d", &n);
        memset(die, 0, sizeof(die));
        memset(val, 0, sizeof(val));
        memset(vis, 0, sizeof(vis));
        int k = 0;
        bool win = false;
        for(int i=1; i<=n; i++)
        {
            scanf("%d", &val[i]);
            if(val[i] == 1)
            {
                k = i;
            }
        }/*
        for(int i=1; i<=n; i++)
        {
            printf("%d ", val[i]);

        }
        printf("\n");*/
        for(int i = 1; i<= n; i++)
        {
            for(int j = 1; j<= n; j++)
            {
                scanf("%d", &vis[i][j]);
            }
        }/*
        for(int i=1; i<= n; i++)
        {
            for(int j=1; j<=n; j++)
            {
                printf("%d ", vis[i][j]);
            }
            printf("\n");
        }*/

        int count_ = 0;
        for(int i=1; i<=n; i++)
        {
            int num = vis[k][i];
            if(num != k && die[num] == 0)//狼人杀人
            {
                int out = num; //被杀猎人
                die[num] = 1;
                //cout << out << endl;
                count_++;
                int out_k;
                while(out)
                {
                    int con = 0;
                    for(int i=1; i<=n; i++)
                    {
                        out_k = vis[out][i];
                        if(out_k == k)//狼人被击杀
                        {
                            win = false;
                            con = 1;
                            break;
                        }
                        if(out_k != k && die[out_k] == 0)//猎人被击杀
                        {
                            die[out_k] = 1;
                            count_++;
                            out = out_k;
                            //cout << out << endl;
                            break;
                        }
                    }
                    //cout << "   " << count_ << endl;
                    if(count_ >= n - 2)
                    {
                        win = true;
                        con = 1;
                    }
                    //cout << "con" << con << endl;
                    if(con == 1)
                    {
                        break;
                    }
                }
            }
            break;
        }
        if(win == true)
        {
            printf("langren\n");
        }
        else
            printf("lieren\n");
    }
    return 0;
}