import sys, math
sys.setrecursionlimit(1000000)
INF = 1 << 100
#mod = 1000000007
mod = 998244353
input = lambda: sys.stdin.readline().rstrip()
li = lambda: list(map(int, input().split()))


N = int(input())
ans = [[0] * N for _ in range(N)]
x = 0
for i in range(N):
    for j in range(N):
        ans[j][(j+x)%N] = i+1
    x += 1

for a in ans:
    print(*a)