#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define e "\n"
#define all(s) s.begin(), s.end()
#define sz(s) (int)s.size()
#define pi 3.14159
#define lpi 3.141592653
#define llpi 3.141592653589
void FOLaa() {
	std::ios_base::sync_with_stdio(NULL);
	cin.tie(0);
	cout.tie(0);
}
const int N = 2e5 + 5;
 
int main()
{
	FOLaa();
	int t;
	cin >> t;
	while (t--)
	{
		int n,x;
		cin >> n>>x;
		cout<<0<<" ";
		while(--n)
		{
			int a;
			cin>>a;
			cout<<((a|x)^a)<<" ";
			x|=a;
		}
		cout << e;
	}
	return 0;
}
 

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NQo0CjEgMyA3IDE1CjQKMSAyIDQgOAo1CjEgMiAzIDQgNQo0CjExIDEzIDE1IDEKMQowCg==

5
4
1 3 7 15
4
1 2 4 8
5
1 2 3 4 5
4
11 13 15 1
1
0