#include<cstdio>
using namespace std;
int x[2000],n;
void afiseaza()
{
	for(int i=1;i<=n;i++)
		printf("%d ",x[i]);
	printf("\n");
}
bool bun(int a)
{
	for(int i=1;i<a;i++)
		if(x[i]==x[a])
			return 0;
	return 1;
}
void back(int i)
{
	if(i>n)
	{
		afiseaza();return;
	}
	for(int j=1;j<=n;j++)
	{
		x[i]=j;
		if(bun(i))
			back(i+1);
	}
}
int main()
{
	freopen("permutari.in","r",stdin);freopen("permutari.out","w",stdout);
	scanf("%d",&n);
	back(1);
}