N, K= map(int, input().split())
if K == 0:
	print(-1)
else:
	for i in range(N):
		for j in range(N):
			if i * N + j < K:
				print(i * N + j + 1 + N * N - K , end="\n" if j == N-1 else " ")
			else:
				print(i * N + j + 1 - K , end="\n" if j == N-1 else " ")