#include <fstream>
#include <vector>
using namespace std;
ifstream cin("combinari.in");
ofstream cout("combinari.out");
vector<int>rasp,v;
vector<bool>folosit;
void combinari(int n,int k,int indice){
    if(indice==k+1){
        for(int i=1;i<=k;i++){
            cout<<v[i]<<" ";
        }
        cout<<'\n';
        return;
    }
    for(int i=v[indice-1]+1;i<=n;i++){
        if(!folosit[i]){
            continue;
        }
        folosit[i]=false;
        v[indice]=i;
        combinari(n,k,indice+1);
        folosit[i]=true;
    }
}
int main(){
    int n,k;
    cin>>n>>k;
    folosit.resize(n+1,true);
    v.resize(k+1);
    combinari(n,k,1);
}