#include<stdio.h>
FILE*fin=fopen("combinari.in","r");
FILE*fout=fopen("combinari.out","w");
int n,k,sol[30];
void back(int p)
{
  int i;
  for(i=sol[p-1]+1;i<=n;i++)
  {
    sol[p]=i;
    if(p==k)
    {
      for(int j=1;j<=k;j++)
	fprintf(fout,"%d%c",sol[j],' ');
      fprintf(fout,"\n");
    }
    else back(p+1);
  }
}
int main()
{
  fscanf(fin,"%d%d",&n,&k);
  fclose(fin);
  sol[0]=0;
  back(1);
  fclose(fout);
  return 0;
}