#include <fstream>

using namespace std;

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

int n, k;
int s[20];

void tipar(int k)
{
    for(int i = 1; i <= k; i++)
        out << s[i] << " ";
    out << "\n";

}

void bkt(int p)
{
    if(p == k+1)
        tipar(k);
    else
        for(int i = s[p-1]+1; i <= n-k+p; i++)
        {
            s[p] = i;
            bkt(p+1);
        }
}


int main()
{
    in >> n;
    for(k = 1; k <= n; k++)
        bkt(1);

    return 0;
}