#include<bits/stdc++.h>
using namespace std;
int n,r,v[10000];
void f(int x,string s,int last){
     if(x==0){
        for(int i=0;i<=s.size()-1;i++) printf("%c ",s[i]);
        printf("\n");
        return;
     }
      for(int i=last+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: linmiaoling
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2116 kb
****************************************************************/