#include <iostream>
#include <fstream>

using namespace std;

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

void back(int v[], int n, int i)
{
    int j;
    if(i>0)
    {
        for(j=1;j<=i;j++)
    {
        o<<v[j]<<" ";
    }
    o<<endl;
    }
    for(j=v[i]+1;j<=n;j++)
    {
        v[i+1]=j;
        back(v,n,i+1);
    }
}

int v[20];

int main()
{
    int n;
    f>>n;
    back(v,n,0);
    return 0;
}