#include <fstream>

using namespace std;
ifstream cin("submultimi.in");
ofstream cout("submultimi.out");
int n;
int x[9];
void afisare(int limita)
{
    for(int i=1; i<=limita; i++)
        cout<<x[i]<<" ";
    cout<<"\n";
}
void backpain(int k)
{
    for(int i=x[k-1]+1; i<=n; i++)
    {
        x[k]=i;
        if(k<n)
            backpain(k+1);
        afisare(k);
    }
}
int main()
{
    cin>>n;
    backpain(1);

    return 0;
}