# include <stdio.h>
int st[20];
int N,K;
FILE *f=fopen("combinari.in","r"),*g=fopen("combinari.out","w");

void back(int k)
{
 int i,j;
 if (k==K+1){
	      for (j=1;j<=K;j++)
		fprintf(g,"%d ",st[j]);
	      fprintf(g,"\n");
	     }
	 else {
	  for (i=st[k-1]+1;i<=N;i++)
	   {
		st[k]=i;
		back(k+1);
	   }
	 }
}
int main()
{

 fscanf(f,"%d %d",&N,&K);
 fclose(f);
 back(1);
 fclose(g);
 return 0;
}