import java.io.IOException;
import java.util.Scanner;
/**
* Created by arpit on 15/12/16.
* www.codechef.com/users/arpit728
*/
class MaxXorSubArray {
static int a[]=new int[100000];
//BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
Scanner sc
=new Scanner
(System.
in); int t,n;
t=sc.nextInt();
while (t-->0){
n=sc.nextInt();
//s=br.readLine().split("\\s");
for (int i = 0; i < n; i++) {
a[i]=sc.nextInt();
//a[i]=Integer.parseInt(s[i]);
}
}
}
}
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