def wa(pos):
    return pos*(pos+1)//2

T=int(input())
for i in range(T):
    N,X=map(int,input().split())
    ans=[]
    if wa(N)>X:
        print(-1)
        continue
    for i in range(N-1):
        ok=X-wa(N-i-1)
        ng=0
        while ok-ng>1:
            mid=(ok+ng)//2
            now=X-mid-wa(N-i-1)
            if now<0:
                ng=mid
                continue
            if (N-i-1)+(now+N-i-2)//(N-i-1)<mid:
                ok=mid
            else:
                ng=mid
        X-=ok
        ans.append(ok)
    ans.append(X)
    print(*ans)