import sys
input = sys.stdin.readline

T=int(input())

for tests in range(T):
    N=int(input())
    A=list(map(int,input().split()))
    A.sort()

    if N%2==0:
        flag=1
        for i in range(0,N,2):
            if A[i]!=A[i+1]:
                flag=0

        if flag:
            print("Bob")
            continue

    print("Alice")