N = int(input())

ans = [[None] * N for i in range(N)]

for i in range(N):

    for j in range(N):

        ans[(j+i)%N][i] = j+1

a = ans

for i in range(N):
    for j in range(N):

        if a[j][i] == i+1:
            a[i],a[j] = a[j],a[i]
            break

for i in ans:
    print (*i)