#include <iostream>
#include <fstream>

using namespace std;

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

void print(int k, int comb[])
{
    for (int i = 1; i <= k; i++)
    {
        g<<comb[i]<<" ";
    }
    g<<'\n';
}

void back(int n, int k, int comb[], int poz)
{
    if (poz == k + 1)
    {
        print(k, comb);
        return;
    }
    for (int i = comb[poz - 1] + 1; i <= n; i++)
    {
        comb[poz] = i;
        back(n, k, comb, poz + 1);
    }
}

int main()
{
    int n, k, comb[20];
    f>>n>>k;
    comb[0] = 0;
    back(n, k, comb, 1);
    return 0;
}