#include<stdio.h>
FILE *f,*g;
int n,k,s[19];
void back(int l) {
if(l==k) {
	for(int i=1;i<=k;i++)
   	fprintf(g,"%d ",s[i]);
fprintf(g,"\n");
}
  else {
  for(int j=s[l]+1;j<=n;j++) {
  		s[l+1]=j;
      back(l+1);
	}
	}
}
int main() {
f=fopen("combinari.in","r");
g=fopen("combinari.out","w");
fscanf(f,"%d %d",&n,&k);
back(0);
fclose(f);
fclose(g);
return 0;
       
    }