#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define dbg(x) cout << #x <<": " << x << "\n";
#define sz(x) ((int)x.size())

using ll = long long;

const string fn = "combinari";
ifstream fin(fn + ".in");
ofstream fout(fn + ".out");

int n, k;
vector<int> ac;
void dfs(int x) {
	if (ac.size() == k) {
		for (auto i : ac)
			fout << i << " ";
		fout << '\n';
		return;
	}
	for (int i = x; i <= n; ++i) {
		ac.pb(i);
		dfs(i + 1);
		ac.pop_back();
	}
}


int main() {

	fin >> n >> k;
	dfs(1);

	return 0;
}