#include<stdio.h>
#include<iostream>
using namespace std;
int a [ 105 ];
int cmmdc(int a,int b)
{
	int r;
	while(b)
	{
		r=a%b;
		a=b;
		b=r;
	}
	return a;
}
int main()
{
	int n,i,j;
	cin>>n;
	for(i=1;i<=n;i++)
		cin>>a [ i ];
	cout<<endl;
	for(i=1;i<n;i++)
		for(j=i+1;j<=n;j++)
			if(cmmdc(a[i],a[j])==1)
				cout<<a [ i ]<<" "<<a [ j ]<<endl;
	return 0;
}