N = int(input())
res = []
for i in range(N):
    tmp = []
    for j in range(N):
        tmp.append((i + j) % N + 1)
    res.append(tmp)


xtoi = {res[x][x]: x + 1 for x in range(N)}
for r in res:
    print(*[xtoi[x] for x in r])