#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000000


int main(){
	
	int _t;
	cin>>_t;
	
	rep(_,_t){
		int N;
		cin>>N;
		int X = 0;
		vector<int> a(N);
		rep(i,N)cin>>a[i];
		
		
		rep(i,N)X ^= a[i];
		
		set<int> S;
		rep(i,N){
			if(S.count(a[i]))S.erase(a[i]);
			else S.insert(a[i]);
		}
		
		if(S.size()!=0)cout<<"Alice"<<endl;
		else cout<<"Bob"<<endl;
	}
	return 0;
}