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

using namespace std;

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

void combinari(vector <int> &comb, int n, int k, int pos, int prev_num) {
    if (pos == k) {
        for (int i = 0; i < k; i++) {
            out << comb[i] << ' ';
        }
        out << '\n';
        return;
    }
    for (int i = prev_num + 1; i <= n; i++) {
        if (n - i < k - pos - 1) {
            break;
        }
        comb[pos] = i;
        combinari(comb, n, k, pos + 1, i);
    }
}

int main() {
    int n, k;
    in >> n >> k;
    vector <int> comb(n);
    combinari(comb, n, k, 0, 0);
    return 0;
}