#include <fstream>
using namespace std;
ifstream fin ("combinari.in");
ofstream fout ("combinari.out");
int n,k,v[25],v2[30],k2;
void Combinari (int k)
{
    if (k>=1)
    {
        for (int i=v2[k2-k]+1;i<=n;++i)
        {
            if (v[i]==0)
            {
                v2[k2-k+1]=i;
                v[i]=1;
                Combinari (k-1);
                v[i]=0;
            }
        }
    }
    else
    {
        for (int i=1;i<=k2;++i)
        {
            fout <<v2[i]<<' ';
        }
        fout <<'\n';
    }
}
int main()
{
    fin >>n>>k;
    k2=k;
    Combinari (k);
    fin.close ();
    fout.close ();
    return 0;
}