//
// Created by 42kangaroo on 09/08/2024.
//
#include "bits/stdc++.h"

using namespace std;

signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	int t; cin >> t;
	while (t--) {
		int n, k; cin >> n >> k;
		vector<int> in(k);
		for (int i = 0; i < k; ++i) {
			cin >> in[i];
		}
		if (in.empty() || in[0] != 1) cout << "1 ";
		for (auto e: in) {
			if (e != 1) cout << e << " ";
		}
		cout << "\n";
	}
}