#include <iostream>
#include <fstream>

using namespace std;

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

int n;
bool good[30];
int v[30];

void show(int k){
    for(int i = 1; i <= k; i++){
        fout << v[i] << " ";
    }
    fout << "\n";
}

void beck(int k){
    if(k > n){
        return;
    }
    for(int i = v[k - 1] + 1; i <= n; i++){
        if(good[i] == false){
            good[i] = true;
            v[k] = i;
            show(k);
            beck(k + 1);
            good[i] = false;
        }
    }
}

int main()
{
    fin >> n;
    beck(1);
    return 0;
}