#include <fstream>
#include <algorithm>
using namespace std;
ifstream fin("nr.in");
ofstream fout("nr.out");
int n,ap[20],st[20];
void Back(int k)
{
    for(int x=1;x<=n;x++)
    {
        st[k]=x;
        if(!ap[x] && !(k>1 && x<st[k-1]))
        {
            ap[x]=1;
            for(int j=1;j<=k;j++)
                cout << st[j] << " ";
            cout << "\n";
            Back(k+1);
            ap[x]=0;
        }
    }
}
int main()
{
    cin >> n;
    Back(1);
    return 0;
}