#include <fstream>
#include <vector>

class Combination {
public:
    Combination(int nn, int nk);

    void generate_write(std::ofstream &fout, int i);

private:
    std::vector<int> stat, x;

    int n, k;
};

Combination::Combination(int nn, int nk) : n(nn), k(nk) {
    stat.resize(n + 1);
    x.resize(k);
}

void Combination::generate_write(std::ofstream &fout, int i) {
    for (int j = 1; j <= n; j++) {
        if (stat[j] == 1 || (i!=0 && x[i-1]>j)) continue;
        x[i] = j;
        stat[j] = 1;
        if (i != k-1) generate_write(fout, i + 1);
        else {
            for(int e:x) fout<<e<<" ";
            fout << "\n";
        }
        stat[j] = 0;
    }
}

int main() {
    std::ifstream fin("combinari.in");
    int n, k;
    fin >> n >> k;
    fin.close();
    Combination com(n, k);

    std::ofstream fout("combinari.out");
    com.generate_write(fout, 0);
    fout.close();
}