#include<iostream>
#include<fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");

int v[20],n,m;


int bt(int k){
	for(int i=v[k-1]+1;i<=n;++i){
		v[k]=i;
		if(k==m){
			for(int j=1;j<=m;++j)
				fout<<v[j]<<" ";
			fout<<endl;
		}
		else
			bt(k+1);
	}
}
int main()
{
	fin>>n>>m;
	bt(1);
	return 0;
}