#include <bits/stdc++.h>
using namespace std;
int t,n,tem,a[51][51],v[51],wolf,sum;
int main()
{
    ios::sync_with_stdio(0);
    cin>>t;
    L:while(t--)
    {
        cin>>n;sum=n;memset(v,0,sizeof(v));
        for(int i=1;i<=n;i++)
        {
            cin>>tem;if(tem==1) wolf=i;
        }
        for(int i=1;i<=n;i++)
         for(int j=1;j<=n;j++)
          cin>>a[i][j];
                int now=a[wolf][1];
                 v[now]=1;sum--;
                 if(now==wolf) {
                     cout<<"lieren"<<endl;goto L;
                 }
                if(sum<=2){
                    cout<<"langren"<<endl;goto L;
                }
                while(sum>2)
                {
                for(int j=1;j<=n;j++)
                 if(!v[a[now][j]]&&a[now][j]!=now) {
                     v[a[now][j]]=1;sum--;now=a[now][j];
                     if(v[wolf]) {
                    cout<<"lieren"<<endl;goto L;
                }
                    else if(sum<=2){
                    cout<<"langren"<<endl;goto L;
                } break;
                 }
                }
                cout<<"langren"<<endl;goto L;
    }
    return 0;
}