#include <iostream>
#include <fstream>

using namespace std;

ifstream in("submultimi.in");
ofstream out("submultimi.out");

int n, sol[20], m;

void afiseaza() {
    for (int i = 1; i <= m; ++i)
        out << sol[i] << " ";

    out << "\n";
}

void solve(int k) {
    if (k == m + 1) {
        afiseaza();
        return;
    }

    for (int i = 1 + sol[k-1]; i <= n - m + k; ++i) {
        sol[k] = i;
        solve(k+1);
    }
}

int main() {
    in >> n;
    for (m = 1; m <= n; ++m)
        solve(1);
    return 0;
}