import itertools
t = int(input())
for _ in range(t):
    n,x = map(int, input().split())
    c = list(itertools.combinations(range(1,x-2), n))
    if len(c) == 0:
        print(-1)
    else:
        for i in c:
            if sum(i) == x:
                print(*i)
                break
        else:
            print(-1)