#include <iostream>
#include <vector>
using namespace std;

#define zfor(i, zn) for(int i = 0; i < zn; ++i)

bool isAlive(int no, vector<int> death);

int main() {

    /*FILE* stream;
    freopen_s(&stream, "in.txt", "r", stdin);*/

    ios::sync_with_stdio(false);
    cin.tie(0);


    int T;
    int n;

    int wolf = 0;

    cin >> T;
    while (T--) {

        vector<int> death;

        cin >> n;
        vector<int> vec(n, 0);

        vector<vector<int>> vec2(n, vec);

        zfor(i, n) {
            cin >> vec[i];
        }
        zfor(i, n) {
            zfor(j, n) {
                cin >> vec2[i][j];
            }
        }

        zfor(i, n) {
            if (vec[i] == 1) {
                wolf = i;
                break;
            }
        }

        int curr = 1;

        death.push_back(vec2[wolf][curr - 1]);

        auto dp = vec2[wolf][curr - 1];

        if (dp == wolf + 1) {
            cout << "lieren" << endl;
            
        }
        else {
            for (;;) {

                if (n - death.size() <= 2) {
                    cout << "langren" << endl;
                    break;
                }

                int ii = 0;
                while (!isAlive(vec2[dp - 1][ii], death)) {
                    ++ii;
                }


                if (vec2[dp - 1][ii] == wolf + 1) {
                    cout << "lieren" << endl;
                    break;
                }
                else {
                    auto au = vec2[dp - 1][ii];
                    death.push_back(au);
                    dp = au;

                }
            }
        }

        



    }
        

    return 0;
}

bool isAlive(int no, vector<int> death) {
    for (auto to : death) {
        if (to == no) return false;
    }
    return true;
}