#include <iostream>
#include <fstream>
using namespace std;
 
ifstream f("combinari.in");
ofstream g("combinari.out");
 
int n, k, v[20], p = 0;
 
void Afisare()
{
    for(int i = 1; i <= k; ++i)
        g << v[i] << " ";
    g << "\n";
}
 
void Back(int t)
{
    for(int i = t; i <= n; ++i)
    {
        v[++p] = i;
        if(p == k) Afisare();
        Back(i+1);
        --p;
    }
}
 
int main()
{
    f >> n >> k;
    Back(1);
}