#include <iostream>
#include <fstream>
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");
int r[19], n, k;
void show(int x) {
    for(int i = 1; i < x; i++)
        out << r[i] << ' ';
    out << '\n';
}
void backt(int x) {
    if(x <= k) {
        for(int i = r[x-1]+1; i <= n-k+x; i++) {
            r[x] = i;
            backt(x+1);
        }
    } else show(x);
}
int main()
{
    in >> n >> k;
    backt(1);
    return 0;
}