#include <fstream>
using namespace std;

const int MAXN = 20;

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

int n;

int v[MAXN];
int l;

void afisare()
{
    for (int i = 1;i < l;++i)
        out << v[i] << ' ';
    if (l > 0)
    {
        out << v[l];
        out << '\n';
    }
}

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


int main()
{
    in >> n;
    bkt();
    return 0;
}