#include<fstream>
using namespace std;
#define KMAX 20

int n,k;
int sol[KMAX];

ofstream fout("combinari.out");

void read()
{
 ifstream fin("combinari.in");
 fin>>n>>k;
 fin.close();
}

void write()
{
 int i;
 for (i=1; i<=k; ++i)
	 fout<<sol[i]<<" ";
 fout<<'\n';
}

void combinari(int poz)
{
 int i;
 if (poz == k+1)
	 write(); else
	 for (i=sol[poz-1]+1; i<=n-k+poz; ++i)
		{
		 sol[poz] = i;
		 combinari(poz+1);
		}
}

int main()
{
 read();
 combinari(1);
 fout.close();
 return 0;
}