#include <fstream>

using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");

int fol[20],st[20];
int n,m;

void back(int k){
    for(int i = st[k - 1] + 1; i <= n; i++){
        if(fol[i] == 0){
            fol[i] = 1;
            st[k] = i;

            if(k == m){
                for(int i = 1; i <= m; i++){
                    g << st[i] <<" ";
                }
                g <<"\n";
            }else
                back(k + 1);

            fol[i] = 0;
        }
    }
}
int main()
{
    f >> n >> m;
    back(1);
    return 0;
}