#include <fstream>

using namespace std;

const char InFile[]="combinari.in";
const char OutFile[]="combinari.out";

int sol[20],n,m,len;
ofstream fout(OutFile);

void back(int k){
	if(k>m){
		for(register int i=1;i<=m;++i){
			fout<<sol[i]<<" ";
		}
		fout<<"\n";
	}else{
		if(sol[k-1]!=n){
			for(register int i=sol[k-1]+1;i<=n;++i){
				sol[k]=i;
				back(k+1);
			}
		}
	}
}

int main(){
	ifstream fin(InFile);
	fin>>n>>m;
	fin.close();
	back(1);
	fout.close();
	return 0;
}