k=[]
for t in range(int(raw_input())):
    l1=0
    s=""
    p=int(raw_input())
    n=[int(i) for i in raw_input().split()]
    x=n.index(max(n))

    y=n.index(min(n))

    l=[j for j in n[y+1:x] if j<max(n)-min(n) ]
    if l==[]:
        s=-1
        k.append(s)
    else:
        l1=l.index(min(l))
        s=str(x+1)+" "+str(y+1)+" "+str(l1+2)
        k.append(s)

for t1 in k:
    print(t1)