#include <bits/stdc++.h>

using namespace std;
#define int long long int 
#define pb push_back
#define len(s) (int) s.size()
const int N = 2e5 + 5, mod = 1e9 + 7, INF = 1e16;

#define cin fin
#define cout fout
ifstream cin("submultimi.in");
ofstream cout("submultimi.out");

int n, sol[N];

void afisare(int level) {
	for (int i = 1; i <= level; i++) {
		cout << sol[i] << ' ';
	}
	cout << '\n';
}

void bkt(int level) {
	for (int i = sol[level - 1] + 1; i <= n; i++) {
		sol[level] = i;
		afisare(level);
		bkt(level + 1);
		sol[level] = 0;
	}
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cin >> n;
    bkt(1);
}