#include<bits/stdc++.h>
using namespace std;
#define int long long
#define fast ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
void solve();
using pii = pair<int, int>; 
using db = double;
signed main(){
	fast
	int t = 1;
	cin >> t;
	for(int i = 1; i <= t; i++){
		solve();
	}
}

const int N = 3e5 + 10, M = N * 2, P = 998244353;

int n;
int a[N];
bool st[N];

void solve(){
	cin >> n;
	for(int i = 1; i <= n; i++) st[i] = 0;
	for(int i = 1; i <= n; i++){
		cin >> a[i];
	}
	for(int i = 1; i <= n; i++){
		if(!st[i]){
			int x = i;
			while(!st[x]){
				cout << x << ' ';
				st[x] = 1;
				x = a[x];
			}
		}
	}
	cout << '\n';
	
}