#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: linzihang
	Language: C++
	Result: Accepted
	Time:25 ms
	Memory:2080 kb
****************************************************************/