testcases=input()
while(testcases):
    length=input()
    array=map(int,raw_input().split())
    yes=[]
    for i in range(len(array)):
        a=array[i]
        for j in range(len(array)):
            if(i!=j):
                b=array[j]
                for k in range(len(array)):
                    if(i!=k and j!=k):
                        c=array[k]
                        if(a+b>c and a+c>b and b+c>a and not yes):
                            yes.append(i+1)
                            yes.append(j+1)
                            yes.append(k+1)
                            break
    if yes:
        for val in yes:
            print(val),
        print("\n")
    else:
        print(-1),
        print("\n")
    testcases-=1
    
    