#include <iostream>
#include <fstream>

using namespace std;

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

int n, k;
int st[20];
bool f[20];

void afisare(int p) {
    for (int i = 1; i <= p; ++i) {
        fout << st[i] << " ";
    }
    fout << "\n";
}

void backtrack(int top) {
    if (top > n) {
        return;
    }

    for (int i = 1; i <= n; ++i) {
        if (f[i] == 0 && st[top-1] < i) {
            f[i] = 1;
            st[top] = i;
            afisare(top);
            backtrack(top + 1);
            f[i] = 0;
        }
    }

}

int main() {
    fin >> n;

    backtrack(1);

    return 0;
}