#include<bits/stdc++.h>
using namespace std;
int n,v[21],r;
void f(int x,string s,int ffd){
	if(x==0){
		for(int i=0;i<s.size();i++) printf("%c ",s[i]);
		printf("\n");
		return;
	}
	for(int i=ffd+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);
	return 0;
}
/**************************************************************
	Problem: 1686
	User: zzz
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/