#include<bits/stdc++.h>
using namespace std;
int n,r;
int v[1000];
void f(int x,string s,int d){
	if(x==0){
		for(int i=0;i<=s.size()-1;i++) printf("%c ",s[i]);
		printf("\n");
		return;
	}
	for(int i=d+1;i<=n;i++){
		if(!v[i]){
			v[i]=1;
			f(x-1,s+char(i+'0'),i);
			v[i]=0; 
		}
	}
}
int main(){
	scanf("%d%d",&n,&r);
	f(r,"",0);
}
/**************************************************************
	Problem: 1686
	User: zhuanghaoxiang
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2080 kb
****************************************************************/