#include <fstream>
#include <vector>

using namespace std;

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

vector<int> sol;
vector<bool> used;

void afisare() {
    for (auto num : sol) {
        cout << num << " ";
    }
    cout << endl;
}

void bkt(int step, int n, int k) {
    if (step == k) {
        afisare();
        return;
    }

    for (int i = 1; i <= n; i++) {
        if (!used[i] && (step == 0 || i > sol.back())) {
            used[i] = true;
            sol.push_back(i);
            bkt(step + 1, n, k);
            used[i] = false;
            sol.pop_back();
        }
    }
}

int main() {
    int n, k;
    cin >> n >> k;
    used.resize(n + 1, false);

    bkt(0, n, k);

    return 0;
}