#include <fstream>
#include <iostream>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int n,x[1001],k;
void afis()
{     int ok=0;
    for(int i=1;i<=n;i++)if(x[i]){g<<i<<" ";ok++;}
  if(ok!=0)  g<<endl;
}
void back()
{
    k=1;
    x[1]=-1;
    do
    {
        while(x[k]<1)
        {
            x[k]++;
            if(k==n)afis();
            else {k++;x[k]=-1;}
        }
        k--;
    }while(k);
}
int main()
{
   f>>n;
    back();
    return 0;
}