#include <bits/stdc++.h>

using namespace std;

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

int n, st[20];

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

void Back(int top)
{
	if (top > 1)
		Afis(top);
	for (int i = st[top - 1] + 1; i <= n; i++)
	{
		st[top] = i;
		Back(top + 1);
	}
}

int main()
{
	fin >> n;
	Back(1);

	return 0;
}