#include<bits/stdc++.h>
using namespace std;
const int maxn=60;

int T;
int n;

int died[maxn];
int kill[maxn][maxn];

int _main(){
    cin>>T;
    while(T--){
        cin>>n;
        for(int i=1;i<=n;++i)died[i]=0;
        int lang;
        for(int i=1;i<=n;++i){
            int x;scanf("%d",&x);
            if(x==1)lang=i;
        }
        for(int i=1;i<=n;++i){
            for(int j=1;j<=n;++j){
                scanf("%d",&kill[i][j]);
            }
        }
        if(lang==kill[lang][1]){
            printf("lieren\n");
            continue;
        }
        int last=lang;
        int nxt;
        for(int t=1;t<=n-2;++t){
            for(int i=1;i<=n;++i){
                if(last==kill[last][i])continue;
                if(died[kill[last][i]])continue;
                nxt=kill[last][i];break;
            }
            died[nxt]=1;
            last = nxt;
            if(nxt==lang)break;
        }
        if(nxt==lang){
            printf("lieren\n");
        }else{
            printf("langren\n");
        }
    }
    return 0;
}
int __ret__=_main();
int main(){}