#include <iostream>
#include <fstream>
using namespace std;
int n, st[18];

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

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

void Back(int top)
{
    if(top > 1) Write(top - 1);
    for(int i = st[top - 1] + 1; i <= n; i++)
    {
        st[top] = i;
        Back(top + 1);
    }
}
int main()
{
    fin >> n;
    Back(1);
    return 0;
}