#include <iostream>
#include <fstream>
using namespace std;

const int NMAX = 18;
int n, k;
ifstream in("combinari.in");
ofstream out("combinari.out");

int solCrt[1 + NMAX];

void back(int pozCrt, int valAnt)
{
    if (pozCrt == k + 1)
    {
        for (int i = 1; i <= k; i++)
            out << solCrt[i] << ' ';
        out << '\n';
    }
    else
    {
        for (int i = valAnt + 1; i <= n; i++)
        {
            solCrt[pozCrt] = i;
            back(pozCrt + 1, i);
        }
    }
}
int main()
{
    in >> n >> k;
    back(1, 0);
    return 0;
}