#include <cstdio>
#include <cctype>
#include <cstring>
#include <algorithm>
void Read(int &x){
    char c;
    while(!isdigit(c=getchar()));
    x=(c&15);
    while(isdigit(c=getchar()))
        x=x*10+(c&15);
}
void Print(int x,char c){
    int i;
    for(i=1;i*10LL<=x;i*=10);
    for(;i;i/=10)
        putchar(x/i%10|48);
    putchar(c);
}
const int N=55;
int T,n,id[N],langren,a[N][N];
bool vis[N];
int main(){
    Read(T);
    while(T--){
        Read(n);
        memset(vis+1,0,n);
        for(int i=1;i<=n;++i){
            Read(id[i]);
            if(id[i])
                langren=i;
        }
        for(int i=1;i<=n;++i)
            for(int j=1;j<=n;++j)
                Read(a[i][j]);
        int p=a[langren][1];
        if(p==langren){
            puts("lieren");
            continue;
        }
        int cnt=n;
        while((--cnt)>2){
            vis[p]=true;
            for(int i=1;i<=n;++i)
                if(!vis[a[p][i]]){
                    p=a[p][i];
                    break;
                }
            if(p==langren)
                break;
        }
        if(cnt<=2)
            puts("langren");
        else
            puts("lieren");
    }
    return 0;
}