#include <fstream>
#include <iostream>
using namespace std;

int a[25],l,b[25];

ifstream f("permutari.in");
ofstream g("permutari.out");

void back(int k)
{
    if(k == l+1)
        {
        for(int i = 1;i <= l;++i)
            {
                g<<a[i]<<' ';
            }
            g<<'\n';
        }
    else
    {
        for(int i = 1;i <= l;++i)
        {
            if(!b[i])
            {
                a[k] = i;
                b[i] = 1;
                back(k+1);
                b[i] = 0;
        }
    }
}
}

int main()
{
    f>>l;
    back(1);

    return 0;
}