#include <cstdio>

using namespace std;

int n,v[100001];

void Afis()
{
    for(int i=1;i<=n;i++)
    {
        printf("%i ",v[i]);
    }
    printf("\n");
}

bool Valid(int x)
{
    for(int i=0;i<x;i++)
    {
        if(v[i] == v[x])
            return false;
    }
    return true;
}

void Backtracking(int k)
{
    for(int i=1;i<=n;i++)
    {
        v[k] = i;
        if(Valid(k) == true)
        {
            if(k == n)
                Afis();
            else
                Backtracking(k+1);
        }
    }
}

int main()
{
    freopen("permutari.in","r",stdin);
    freopen("permutari.out","w",stdout);
    scanf("%i",&n);
    Backtracking(1);
    return 0;
}