#include<fstream>
using namespace std;
ifstream cin("permutari.in");
ofstream cout("permutari.out");

int st[100],n;;

void afisare(int p){
	for(int i=1;i<=p;++i)
		cout<<st[i]<<" ";
	cout<<endl;
}
void back(int p){
	int pval;
	for(pval=st[p-1]+1;pval<=n;++pval){
		st[p]=pval;
		
		  afisare(p);
			
					 back(p+1);
	}
}
int main()
{
	
	cin>>n;
	back(1);
	
	return 0;
}