#include <bits/stdc++.h>
#define N 100001
using namespace std;

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

int n, s[17];

void backt(int pas){
    if(pas<=n){
        for(int i=s[pas-1]+1;i<=n;i++){
            s[pas] = i;
            for(int j=1;j<=pas;j++){
                cout<<s[j]<<" ";
            }
            cout<<endl;
            if(pas<n){
                backt(pas+1);
            }
        }
    }
}

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