T=int(input())
for _ in range(T):
    N,X=map(int,input().split())
    if (N+1)*N//2>X:
        print(-1)
        continue
    d=(N+1)*N//2
    ans=[i+(X-d)//N for i in range(1,N+1)][::-1]
    for i in range((X-d)%N):
        ans[i]+=1
    print(*ans)