try:
    for _ in range(int(input())):
        a=int(input())
        b=list(map(int,input().split()))
        flag=True 
        i=0 
        k=a-1 
        while flag and i+1<k:
            temp=b[k]-b[i]
            if temp>b[i]:
                print(i+1,k,k+1) 
                flag=False
                break
            else:
                k-=1
        if flag:
            print(-1)
            
except Exception as e:
    print(e)