#include <iostream>

using namespace std;
int x[20],n;

void afis()
{
    for (int i = 1; i <= n; i++) cout<<x[i]<<" ";
    cout<<endl;
}

void inter(int &x, int &y)
{
    int aux=x; x=y; y=aux;
}

void perm(int k, int n)
{
  for (int i = k; i <= n; i++)
       {
          inter(x[k], x[i]);
          if(k==n) afis();
          else perm(k+1, n);
          inter(x[k], x[i]);
       }
}

int main()
{
    cin>>n;
    for(int i=1;i<=n;i++) cin>>x[i];
    perm(1,n);
    return 0;
}