T=int(input())
for _ in range(T):
	n,x=map(int,input().split())
	s=n*(n+1)//2
	if x<s:
		print(-1)
	else:
		p=x-s
		q=p//n
		r=p%n
		print(*[(n-i)+q+(1 if i<r else 0) for i in range(n)])