#include <stdio.h>
FILE *f,*fout;
int a[100],n,k;
void back(int p)
{for (int i=(p==1?1:(a[p-1]+1));i<=n;i++)
 {a[p]=i;
  if(p==k)
  {for (int j=1;j<=k;j++)fprintf(fout,"%d ",a[j]);
   fprintf(fout,"\n");
  }
  else
  back(p+1);
 }
}
int main ()
{f=fopen("combinari.in","r");
 fout=fopen("combinari.out","w");
 fscanf(f,"%d%d",&n,&k);
 back(1);
 fclose(fout);
 return 0;
}