#include<fstream>

using namespace std;

ifstream fin("combinari.in");
ofstream fout("combinari.out");

int  n,k,v[20];

void back(int p, int k, int n)
{
    int i = 0;
    if (p == k+1)
    {
        for (i=1; i<=k; i++)
            fout << v[i] << " ";
        fout << "\n";
    }
    else
    {
        for (i=v[p-1]+1; i<=n; i++)
        {
            v[p] = i;
            back(p+1, k, n);
        }
    }
}
int main()
{
    fin >> n >> k;
    back(1, k, n);
    return 0;
}