#include<bits/stdc++.h>
using namespace std;
int n;
int a[10];
int main()
{
freopen("chou.in","r",stdin);
freopen("chou.out","w",stdout);
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a[i];
}
if(n1)
{
cout<<a[1];
}
else if(n2)
{
cout<<a[1]<<" "<<a[2]<<endl;
cout<<a[2]<<" "<<a[1]<<endl;
}
else if(n3)
{
cout<<a[1]<<" "<<a[2]<<" "<<a[3]<<endl;
cout<<a[1]<<" "<<a[3]<<" "<<a[3]<<endl;
cout<<a[2]<<" "<<a[3]<<" "<<a[1]<<endl;
cout<<a[3]<<" "<<a[1]<<" "<<a[2]<<endl;
cout<<a[3]<<" "<<a[2]<<" "<<a[1]<<endl;
}
else if(n4)
{
cout<<a[1]<<" "<<a[2]<<" "<<a[3]<<" "<<a[4]<<endl;
cout<<a[1]<<" "<<a[2]<<" "<<a[4]<<" "<<a[3]<<endl;
}