#include <fstream>
using namespace std;

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

int Back(int k);
bool Verifpoz(int k);
void ReadSolution(int k);

const int MaxN{50000};
int n, a[MaxN];

int main()
{
    fin >> n;
    Back(1);
    fin.close();
    fout.close();
    return 0;
}

int Back(int k)
{
    int i;

    for (int i = a[k - 1] + 1; i <= n; ++i)
    {
        a[k] = i;
        if (Verifpoz(k))
        {
            ReadSolution(k);
            Back(k + 1);
        }
    }
}

bool Verifpoz(int k)
{
    for (int i = 1;i < k; ++i)
        if (a[i] == a[k])
            return false;
    return true;
}

void ReadSolution(int k)
{
    for (int i = 1; i <= k; ++i)
        fout << a[i] << ' ';
    fout << '\n';
}