#include <math.h>
#include<fstream>

using namespace std;

ifstream fi("combinari.in");
ofstream fo("combinari.out");

int n,m,a[20];
void back(int k)
{ 
  int i;
   if (k==m+1){for(i=1;i<=m;++i) fo<<a[i]<<" ";
                       fo<<'\n';}
                   else for(i=a[k-1]+1;i<=n;++i){a[k]=i;
												back(k+1);
												}
}
 
int main()
{ fi>>n;
   fi>>m;
  back(1);
   
   return 0;
}