#include<fstream>

using namespace std;

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

int n;
int st[100],viz[100];

void WriteData(int top)
{
	for( int i = 1; i<=top;i++)
		fout<<st[i]<<" ";
	fout<<"\n";
}
void Back(int top)
{
	if( top > n)
		return;
	for( int i = st[top-1]+1; i<=n; i++)
		if( viz[i] == 0 )
		{
			viz[i] = 1;
			st[top] = i;
			WriteData(top);
			Back(top+1);
			viz[i] = 0;
		}
}
int main()
{
	fin>>n;
	Back(1);
	fin.close();
	fout.close();
	return 0;
}