#include <iostream>
#include <fstream>

using namespace std;

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

int n, k;
int arr[20];

void comb(int used, int start) {
    if (used == k) {
        for (int i = 1; i <= n; i++)
            if (arr[i]) fout << i << " ";
        fout << "\n";
    }
    for (int i = start; i <= n; i++) {
        cout << i << endl;
        arr[i] = 1;
        comb(used+1, i+1);
        arr[i] = 0;
    }
}


int main() {
    fin >> n >> k;

    comb(0, 1);
}