//Author: Kevin
#include<bits/stdc++.h>
//#pragma GCC optimize("O2")
using namespace std;
#define ll long long
#define ull unsigned ll
#define pb emplace_back
#define mp make_pair
#define ALL(x) (x).begin(),(x).end()
#define rALL(x) (x).rbegin(),(x).rend()
#define srt(x) sort(ALL(x))
#define rev(x) reverse(ALL(x))
#define rsrt(x) sort(rALL(x))
#define sz(x) (int)(x.size())
#define inf 0x3f3f3f3f
#define pii pair<int,int>
#define lb(v,x) (int)(lower_bound(ALL(v),x)-v.begin())
#define ub(v,x) (int)(upper_bound(ALL(v),x)-v.begin())
#define uni(v) v.resize(unique(ALL(v))-v.begin())
#define longer __int128_t
void die(string S){puts(S.c_str());exit(0);}
int p[1001000];
int vis[1001000];
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int t;
	cin>>t;
	while(t--)
	{
		int n;
		cin>>n;
		for(int i=1;i<=n;i++)
		{
			int x;
			cin>>x;
			p[x]=i;
		}
		for(int i=1;i<=n;i++)
			vis[i]=0;
		for(int i=1;i<=n;i++) if(!vis[i])
		{
			vector<int> vec;
			int cur=i;
			while(!vis[cur])
			{
				vec.pb(cur);
				vis[cur]=1;
				cur=p[cur];
			}
			for(auto x:vec)
				cout<<x<<" ";
		}
		cout<<'\n';
	}
	return 0;
}