#include<fstream>
using namespace std;
int X[30],V[30],N,K;

ifstream f("combinari.in"); 
ofstream g("combinari.out"); 


void print()
{ 
	for(int i=1;i<=K;i++) 
		g<<X[i]<<" ";
	g<<"\n";
}
void back (int k){
	if(k>K)
		print();
	else
		for(int i=X[k-1]+1;i<=N;i++)
		{
			X[k]=i;
			V[i]++;
			if(V[i]==1)
				back (k+1); 
			V[i]--;
		}
}
int main (){
	
	f>>N>>K;
	back(1);
	return 0;
}