#include <fstream>
#include <cstdlib>
#include <iterator>
#include <algorithm>


using namespace std;
const int N_MAX=20;

int N, K;
int v[N_MAX];
ofstream out("combinari.out");

inline void back(int k)
{
    if(k == K+1)
    {
        copy(v+1, v+K+1, ostream_iterator<int>(out, " "));
        out<<'\n';
    }
    else for(int i=v[k-1]+1; i <= N; ++i)
         {
             v[k]=i;
             back(k+1);
         }
}
int main()
{
    ifstream in("combinari.in");

    in>>N>>K;
    back(1);

    return EXIT_SUCCESS;
}