#include <bits/stdc++.h>
using namespace std;
int n,sd[100];
void Back(int i);
void afis(int fin);
    ofstream out("submultimi.out");
int  main()
{
    ifstream in("submultimi.in");
    in>>n;
    Back(1);
    out.close();
    in.close();
    return 0;
}
void Back(int i)
{
    if (i<=n)
    {
        for (int j=sd[i-1]+1;j<=n;j++)
        {
            sd[i]=j;
            afis(i);
            Back(i+1);
        }
    }
}
void afis(int fin)
{int i;
    for (i=1;i<=fin;i++)
    out<<sd[i]<<" ";
    out<<"\n";

}