#include <iostream>
#include <fstream>

using namespace std;

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

int n,k,s[20];

void back(int l)
{
    if(l==k)
    {
        for (int i = 1; i <= k; ++i)
            g<<s[i]<<' ';
        g<<'\n';
    } else
    {
        for (int i = s[l]+1; i <= n; ++i) {
               s[l+1]=i;
               back(l+1);
        }
    }
}

int main() {
    f>>n>>k;
    back(0);
    return 0;
}