def cs(n): return n*(n+1)//2 T = int(input()) for _ in range(T): N,X = map(int,input().split()) P = [] for i in range(N): idx = N - i s = cs(idx) rem = X - s if rem < 0: break q = rem//idx r = rem%idx p = idx + q if r > 0: p += 1 P.append(p) X -= p if len(P) == N: print(*P) else: print(-1)