#include <bits/stdc++.h>

using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");

int v[20],n;

inline void Afisare(int top)
{
    int i;
    for(i=1;i<=top;i++)
        fout<<v[i]<<" ";
    fout<<"\n";
}

void Back(int top)
{
    if(top-1!=0) Afisare(top-1);
    int i;
    for(i=v[top-1]+1;i<=n;i++)
    {
        v[top]=i;
        Back(top+1);
    }
}

int main()
{
    fin>>n;
    fin.close();
    Back(1);
    fout.close();
    return 0;
}