#include <iostream>
#include <fstream>
using namespace std;

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

int n, subm[25];

void gen(int element, int lgSubm) {
  if (element == n + 1) {
    return;
  }
  subm[lgSubm] = element;
  for (int i = 1; i <= lgSubm; ++i) {
      fout << subm[i] << ' ';
  }
  fout << '\n';
  gen(element + 1, lgSubm + 1);
  gen(element + 1, lgSubm);
}

int main() {
    fin >> n;
    gen(1, 1);
}