#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair
#define ALL(x) (x).begin(),(x).end()
#define rALL(x) (x).rbegin(),(x).rend()
#define srt(x) sort(ALL(x))
#define rev(x) reverse(ALL(x))
#define rsrt(x) sort(rALL(x))
#define sz(x) (int)(x.size())
void die(string S){puts(S.c_str());exit(0);}
int kill[55][55];
int pos[55];
bool alive[55];
int n;
int ALIVE;
int KILL(int player)
{
    while(pos[player]<=n&&!alive[kill[player][pos[player]]])
        pos[player]++;
    ALIVE--;
    alive[kill[player][pos[player]]]=false;
    return kill[player][pos[player]];
}
void solve()
{
    cin>>n;
    ALIVE=n;
    int wolf;
    for(int i=1;i<=n;i++)
    {
        int x;
        cin>>x;
        if(x)
            wolf=i;
    }
    for(int i=1;i<=n;i++)
    {
        alive[i]=true;
        for(int j=1;j<=n;j++)
            cin>>kill[i][j];
        pos[i]=1;
    }
    while(ALIVE>2&&alive[wolf])
    {
        int hunt=KILL(wolf);
        while(ALIVE>2&&hunt!=wolf&&alive[wolf])
            hunt=KILL(hunt);
    }
    if(alive[wolf])
        puts("langren");
    else    puts("lieren");
}
int main()
{
    int t;
    cin>>t;
    while(t--)
        solve();
    return 0;
}