#include<bits/stdc++.h>
using namespace std;
inline int read(){
    int x=0;char ch=getchar();
    while(!isdigit(ch))ch=getchar();
    while(isdigit(ch)){x=(x<<3)+(x<<1)+(ch-'0');ch=getchar();}
    return x;
}
inline void print(const int x){
    if(x>9)print(x/10);
    putchar(x%10+'0');
}
int t,n,s,q,f[52][52];
bool d[52];
inline void kill(int x){
    d[x]=true,q--;
    if(d[s]){puts("lieren");return;}
    if(q<3){puts("langren");return;}
    for(int i=1,p;i<=n;++i){
        p=f[x][i];if(d[p])continue;
        kill(p);break;
    }
}
int main(){
    t=read();
    while(t--){
        n=read(),q=n;memset(d,false,sizeof(d));
        for(int i=1,a;i<=n;++i){a=read();if(a)s=i;}
        for(int i=1;i<=n;++i)for(int j=1;j<=n;++j)f[i][j]=read();
        kill(f[s][1]);
    }
    return 0;
}