import sys

n, k = map(int, sys.stdin.buffer.read().split())
if k == 0:
    print(-1)
else:
    low = n * n - k
    print("\n".join(" ".join(str(low + x if x <= k else x - k) for x in range(i * n + 1, (i + 1) * n + 1)) for i in range(n)))