import sys
input = sys.stdin.readline
from collections import *


T = int(input())
for _ in range(T):
    N = int(input())
    C = Counter(list(map(int, input().split())))
    ans = 0
    for k, v in C.items():
        ans |= int(v % 2 == 1)
    print("Alice") if ans else print("Bob")