#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

const int nMax = 20;

int n, k;
ofstream out("combinari.out");
int v[nMax];

void citire()
{
    ifstream in("combinari.in");
    in >> n >> k;
    in.close();
}

void backtr(int pos)
{
    if(pos == k + 1)
    {
        for(int i = 1; i <= k; ++i)
            out << v[i] << " ";
        out << "\n";
        return;
    }
    for(int i = v[pos - 1] + 1; i <= n; ++i)
    {
        v[pos] = i;
        backtr(pos + 1);
    }
}

int main()
{
    citire();
    backtr(1);
    return 0;
}