#include <bits/stdc++.h>
#define mod 666013

using namespace std;

ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");

const int DIM = 20 + 5;

int n, ans[DIM];
bool f[DIM];

void solve(int k)
{
    for(int i = ans[k - 1] + 1; i <= n; ++i) {
        if(f[i] == false) {
            f[i] = true;
            ans[k] = i;
            for(int j = 1; j <= k; ++j) fout << ans[j] << " ";
            fout << "\n";
            if(k < n) solve(k + 1);
            f[i] = false;
        }
    }
}
int main()
{

    fin >> n;
    solve(1);

    return 0;
}