#include <fstream>

using namespace std;

int x[19];
int n, K;

ofstream fout("combinari.out");

void Back(int k)
{
     int i;
     if (k == K+1)     
     {
         for (i = 1; i <= K; i++)      
             fout << x[i] << " ";
         fout << "\n";
     }
     else
     {
         for (i = x[k-1]+1; i <= n; i++)
         {
             x[k] = i;
             Back(k+1);    
         }
     }
}

int main()
{
    ifstream fin("combinari.in");
    fin >> n >> K;
    fin.close();
    
    x[0] = 0;
    Back(1);
    
    fout.close();
    
    return 0;    
}