#include <iostream>
#include <fstream>

using namespace std;

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

int n, k;
int x[20];

void kombinal(int p)
{
    if (p > k)
    {
        for (int i = 1; i <= k; ++i)
            fout << x[i] << " ";
        fout << "\n";

        return;
    }

    for (int i = x[p-1] + 1; i <= (n-k+p); ++i)
    {
        x[p] = i;
        kombinal(p+1);
    }
}

int main()
{
    fin >> n >> k;

    x[0] = 0;
    kombinal(1);
}