# include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int v[20],n,k;
void back(int m){
    if(m==k+1){
        for(int i=1;i<=k;i++)
            fout<<v[i]<<" ";
        fout<<"\n";
        return;
    }
    for(int i=v[m-1]+1;i<=n;i++){
        v[m]=i;
        back(m+1);
    }
}
int main () {
    fin>>n>>k;
    back(1);
    return 0;
}