#include<bits/stdc++.h>
using namespace std;
#define int long long int
const int N = 55;
vector<int> g[N];
vector<bool> vis(N), used(N);
 
void DFS(int cur){
    vis[cur] = true;
    cout << cur << ' ';
    for(auto x : g[cur]){
        if(!vis[x]){
            DFS(x);
        }
    }
}
 
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int tt;
    cin >> tt;
    while (tt--){
        int n;
        cin >> n;
        for(int i = 0; i <= n; i++){
            g[i].clear();
            vis[i] = false;
            used[i] = false;
        }
        vector<int> a(n + 1); int boss;
        for(int i = 1; i <= n; i++){
            cin >> a[i];
            if(a[i] == i){
                boss = i;
            }
        }
        vector<int> c; c.push_back(boss);
        for(int i = 1; i <= n; i++){
            if(a[i] == boss and i != boss){
                c.push_back(i);
            }
        }
        used[boss] = true;
        for(auto x : c){
            if(x != boss){
                g[boss].push_back(x);
                used[x] = true;
            }
        }
        for(auto x : c){
            int xx = x - 1, yy = x + 1;
            while (yy <= n and !used[yy]){
                used[yy] = true;
                g[x].push_back(yy);
                yy++;
            }
            while (xx > 0 and !used[xx]){
                used[xx] = true;
                g[x].push_back(xx);
                xx--;
            }
        }
        DFS(boss);
        cout << '\n';
    }
    return 0;
}