#include<bits/stdc++.h>
#define fr(i,a,b) for(int i=(a),end_##i=(b);i<=end_##i;i++)
#define fd(i,a,b) for(int i=(a),end_##i=(b);i>=end_##i;i--)
#define i64 long long
int read()
{
    int r=0,t=1,c=getchar();
    while(c<'0'||c>'9'){ t=c=='-'?-1:1; c=getchar(); }
    while(c>='0'&&c<='9'){ r=(r<<3)+(r<<1)+(c^48); c=getchar(); }
    return r*t;
}
const int N=110;
int a[N][N],vis[N],n;
int main()
{
    fr(T,1,read())
    {
        n=read(); int p,q;
        fr(i,1,n) if(read()) p=q=i;
        fr(i,1,n) fr(j,1,n) a[i][j]=read();
        fr(i,1,n) vis[i]=0;
        fr(i,1,n)
        {
            int j=1;
            while(vis[a[p][j]]) j++;
            vis[a[p][j]]=i; p=a[p][j];
        }
        printf("%s\n",vis[q]<=n-2?"lieren":"langren");
    }
    return 0;
}