#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");

int N, fol[19], k, sir[19];

void gen(int lg, int sir[19]) {
    if (lg == k + 1) {
        for (int i = 1; i <= k; ++i) {
            fout << sir[i] << " ";
        }
        fout << "\n";
        return;
    }
    for (int c = 1; c <= N; ++c) {
        if (fol[c] == 0 && c > sir[lg - 1]) {
            sir[lg] = c;
            fol[c] = 1;
            gen(lg + 1, sir);
            fol[c] = 0;
        }
    }
}

 int main () {
    fin >> N >> k;
    gen(1, sir);
 }