#include <stdio.h>
#define MN 50

int n,type[MN+5],rank[MN+5][MN+5];

void solve(){
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
        scanf("%d",&type[i]);
    for(int i=1;i<=n;i++)
        for(int j=1;j<=n;j++)
            scanf("%d",&rank[i][j]);
    int playerLeft = n;
    int shootPlayer = -1;
    for(int i=1;i<=n;i++)
        if(type[i]==1){
            shootPlayer = i;
            break;
        }
    if(rank[shootPlayer][1]==shootPlayer){
        puts("lieren");
        return;
    }
    const char* winner = "langren";
    while(playerLeft>2){
        int targetId = -1;
        for(int i=1;i<=n;i++){
            int curTarget = rank[shootPlayer][i];
            if(curTarget==shootPlayer||type[curTarget]==-1)
                continue;
            targetId = curTarget;
            break;
        }
        if(type[targetId]==1){
            winner = "lieren";
            break;
        }
        shootPlayer = targetId;
        type[targetId] = -1;
        playerLeft--;
    }
    puts(winner);
}

int main(){
    int T;
    scanf("%d",&T);
    while(T--) solve();
}