#include <bits/stdc++.h>
#define mst(a,b) memset(a,b,sizeof(a))
#define lowbit(x) ((x)&(-x))
#define X first
#define Y second
#define lc o<<1
#define rc o<<1|1
using namespace std;
typedef long long LL;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
const int inf = 0x3f3f3f3f;
const ll INF = 0x3f3f3f3f3f3f3f3f;
const int maxn = 50+10;
const int maxm = 100000+10;
const int mod = 998244353;
const double eps = 1e-8;

bool isDead[maxn];
int a[maxn][maxn];

int main() {
#ifdef local
    freopen("in.txt", "r", stdin);
    //freopen("out.txt", "w", stdout);
#endif
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);

    int T; cin >> T;
    while (T--) {
        int n; cin >> n;
        mst(isDead, 0);
        int lang = 0;
        for (int i = 1; i <= n; ++i) {
            int idt; cin >> idt;
            if (idt) {
                lang = i;
            }
        }
        for (int i = 1; i <= n; ++i) for (int j = 1; j <= n; ++j){
            cin >> a[i][j];
        }
        int alive = n - 1;
        int die = a[lang][1];
        isDead[die] = true;
        while (alive > 2 && !isDead[lang]) {
            for (int i = 1; i <= n; ++i) {
                if (!isDead[a[die][i]]) {
                    isDead[a[die][i]] = true;
                    --alive;
                    die = a[die][i];
                    break;
                }
            }
        }
        if (isDead[lang]) {
            cout << "lieren\n";
        } else {
            cout << "langren\n";
        }
    }

    return 0;
}