#include <iostream>
#include <cstdio>
#include <cstring>
#define ll long long
using namespace std;
template <typename T>
void read(T &x) {
    x = 0; char c = getchar(); int f = 0;
    for (; !isdigit(c); c = getchar())
        f |= c == '-';
    for (; isdigit(c); c = getchar())
        x = x * 10 + (c ^ '0');
    if (f) x = -x;
}

template <typename T>
void write(T x, char ed = '\n') {
    if (x < 0) putchar('-'), x = -x;
    static short st[30], tp;
    do st[++tp] = x % 10, x /= 10; while (x);
    while (tp) putchar(st[tp--] | '0');
    putchar(ed);
}

int T, n, rt, ed[55][55], vis[55];
int main() {
    for (read(T); T; --T) {
        read(n); 
        for (int i = 1, v;i <= n; ++i) 
            read(v), v ? rt = i : 0;
        for (int i = 1;i <= n; ++i)
            for (int j = 1;j <= n; ++j)
                read(ed[i][j]);
        int nw = rt;
        memset(vis, 0, sizeof(vis));
        for (int i = 1;i < n - 1; ++i) {
            for (int j = 1;j <= n; ++j) if (!vis[ed[nw][j]]) {
                vis[ed[nw][j]] = 1, nw = ed[nw][j]; break;
            }
        }
        puts(vis[rt] ? "lieren" : "langren");
    }
    return 0;
}