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

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

int n;
vector<int> permutari;

bool verifica (int m)
{
	for (int i = 0; i < m; i ++)
	{
		if (permutari[i] == permutari[m])
			return false;
	}
	return true;
}

void backtracking (int m)
{
	if (m == n)
	{
		for (int i = 0; i < m; ++i)
			fout<<permutari[i]<<" ";
		fout<<"\n";
		return;
	}
	else
	{
		for (int i = 1; i <= n; i++)
		{
			permutari[m] = i;
			if (verifica (m) == true)
				backtracking(m+1);
		}
	}
}

int main()
{
	fin>>n;
	permutari.resize(n+1);
	backtracking(0);
}