#include <bits/stdc++.h>
using namespace std;

int id[55], rk[55][55], lr;
bool isdead[55];

int main() {
  int T;
  scanf("%d", &T);
  while (T--) {
    int n;
    scanf("%d", &n);
    for (int i = 1; i <= n; ++i) {
      scanf("%d", id + i);
      if (id[i]) lr = i;
      isdead[i] = false;
    }
    int dead;
    for (int i = 1; i <= n; ++i) {
      if (i == lr) {
        scanf("%d", &dead);
        for (int j = 1; j < n; ++j) scanf("%*d");
      } else {
        for (int j = 1; j <= n; ++j) scanf("%d", rk[i] + j);
      }
    }
    int alive = n;
    for (;;) {
      isdead[dead] = true;
      if (dead == lr) {
        puts("lieren");
        break;
      } else {
        --alive;
        if (alive <= 2) {
          puts("langren");
          break;
        }
        for (int i = 1; i <= n; ++i)
          if (!isdead[rk[dead][i]]) {
            dead = rk[dead][i];
            break;
          }
      }
    }
  }
}