a=int(input())
for i in range(a):
	b,c=map(int,input().split())
	if c<((b+1)*b)//2:
		print(-1)
		continue
	d=c-((b+1)*b)//2
	n=d//b
	ans=[j+n+1 for j in range(b)]
	l=d%b
	for j in range(-1,-l-1,-1):
	    ans[j]+=1
	ans=ans[::-1]
	print(*ans)