#include<fstream>
using namespace std;
int n,k,uz[20],sol[20];
ofstream fout("combinari.out");
void back(int kk)
{
	if(kk==k+1)
	{
		for(int i=1;i<=k;++i)
			fout<<sol[i]<<" ";
		fout<<"\n";
	}
	else
		for(int i=sol[kk-1]+1;i<=n;++i)
			if(!uz[i])
			{
				uz[i]=1;
				sol[kk]=i;
				back(kk+1);
				uz[i]=0;
			}
}
int main()
{
	ifstream fin("combinari.in");
	fin>>n>>k;
	back(1);
}