n = int(input()) a = [[0 for i in range(n)] for j in range(n)] for i in range(n): for j in range(i, n): a[i][j] = i + 1 for j in range(n): for i in range(j + 1, n): a[i][j] = j + 1 for i in range(n): for j in range(n): print(a[i][j], end = " ") print()