#include <bits/stdc++.h>
using namespace std;

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

int n, v[20];
bitset < 20 > c;

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

void bkt(int k){
    for(int i = v[k - 1] + 1; i <= n; i++)
    if(!c[i]){
        v[k] = i;
        c[i] = true;
        afis(k);
        if(k < n)
            bkt(k + 1);
        c[v[k]] = false;
    }
}

int main(){
    in>>n;
    bkt(1);
}