Q=int(input())
for _ in range(Q):
  N,X=map(int,input().split())
  score=N*(N+1)//2
  if X<score:
    print(-1)
    continue
  result=[]
  for x in range(N,1,-1):
    l=1
    r=10**18
    while True:
      m=(l+r)//2
      w1=m
      w2=m-(x-1)
      score=x*(w1+w2)//2
      if score>=X:
        r=m
      else:
        l=m+1
      if l==r:
        break
    result.append(l)
    X-=l
  result.append(X)
  print(*result)