#include <iostream>
#include<fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n, k;
int  v[25];
void backTracking(int x)
{
    if(x == k + 1)
        {
        for(int j = 1; j <= k ;j++)
            g << v[j] << " ";
        g << "\n";
        }
    int i = v[x - 1] + 1;
    while(i <= n)
    {
        v[x] = i;

        backTracking(x + 1);
        i++;
    }

}
int main() {
    f >> n >> k;
    backTracking(1);

}