#include<iostream>
#include<algorithm>
#include<iomanip>
using namespace std;
int n,r;
int num[23];
int main(){
	cin>>n>>r;
	for(int i=r+1;i<=n;++i){
		num[i]=1;
	}
	do{
		for(int i=1;i<=n;++i){
			if(num[i]==0) cout<<i<<" ";
		}
		cout<<endl;
	}
	while(next_permutation(num+1,num+n+1));
	return 0;
}