#include<fstream>
using namespace std;
ifstream fi("combinari.in");
ofstream fo("combinari.out");
long long int n,l,v[10000000];
void back(long long int k){
	if(k==l){
	for(int i=1;i<=k;i++)
	   fo<<v[i]<<" ";
       fo<<endl;   
}
else for(int i=v[k]+1;i<=n;i++)
      {
      	v[k+1]=i;
      	back(k+1);
	  }
}
int main(){
	fi>>n>>l;
	back(0);
	return 0;
}