#include <iostream>
#include <fstream>
using namespace std;

int n,v[1001];

ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");
int afis (int k)
{
    int i;
    for(i=1;i<=k;i++)fout<<v[i]<<" ";
    fout<<endl;
}
int bk (int k)
{
    int i;
    if(k<=n)
    for(i=v[k-1]+1;i<=n;i++)
    {
        v[k]=i;
        afis(k);
        bk(k+1);
    }
}
int main()
{
    fin>>n;
    bk(1);
    return 0;
}