#include<bits/stdc++.h>
using namespace std;
int n,v[6],r;
void f(int x,string s,int j){
	if(x==0){
		for(int w=0;w<=s.size()-1;w++){
			cout<<s[w]<<" ";
		}
		cout<<endl;
		return;
	}
	for(int i=j+1;i<=n;i++){
		if(!v[i]){
			v[i]=1;
			f(x-1,s+char(i+'0'),i);
			v[i]=0;
		}
	}
}
int main(){
	cin>>n>>r;
	f(r,"",0);
	return 0;
}
/**************************************************************
	Problem: 1686
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/