#include<bits/stdc++.h>
#define LL long long
#define PII pair<int,int>
#define PLI pair<LL,int>
#define lson o<<1,l,mid
#define rson o<<1|1,mid+1,r
#define lowbit(x) (x&(-x))
using namespace std;

const int maxn=55;
int T,n,book[maxn],wolf,sum,kill[maxn][maxn],dead;

int main(){
#ifdef OJ
    freopen("data.in","r",stdin);
    freopen("data.out","w",stdout);
#endif
    scanf("%d",&T);
    while(T--){
        scanf("%d",&n);
        memset(book,0,sizeof(book));
        for(int i=1;i<=n;i++){
            int x;
            scanf("%d",&x);
            if(x==1) wolf=i;
        }
        for(int i=1;i<=n;i++){
            for(int j=1;j<=n;j++){
                scanf("%d",&kill[i][j]);
            }
        }
        sum=n;
        dead=kill[wolf][1];
        while(1){
            if(sum<=2){
                printf("langren\n");
                break;
            }
            if(dead==wolf){
                printf("lieren\n");
                break;
            }
            book[dead]=1;
            sum--;
            for(int i=1;i<=n;i++){
                if(!book[kill[dead][i]]){
                    dead=kill[dead][i];
                    break;
                }
            }
        }
    }
}