#include <bits/stdc++.h>

using namespace std;

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

int n,ok;
vector <int> comb;

void combinari(int k)
{
    if ((int)comb.size() == ok)
    {
        for(auto a:comb)
            cout << a << " ";
        cout << "\n";
        comb.pop_back();
        return;
    }
    for (int i = k; i < n; i++)
    {
        comb.push_back(i+1);
        combinari(i+1);
    }
    comb.pop_back();
    return;
}

int main()
{
    fin >> n >> ok;
    combinari(0);
    return 0;
}