#include<fstream>
using namespace std;
int x[50],n;
ifstream in ("submultimi.in");
ofstream out ("submultimi.out");
void scrie ( int k)
{
    for( int i = 1; i <= k; i ++)
        out << x[i] << " ";
    out << '\n';
}
void back ( int k )
{
    if ( k <= n)
    {
        for ( int val = x[k-1] + 1; val <= n; val ++)
        {
            x[k] = val;
            scrie (k);
            back(k+1);
        }
    }
}
int main ()
{
    in >> n;
    back (1);
    return 0;
}