#include<bits/stdc++.h>
using namespace std;
int a[1005],b[1005],c[1005],inb[1005]={false},d[1005]={};
int main(){
	int n,m;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		c[a[i]]++;
	}
	cin>>m;
	for(int i=1;i<=m;i++){
		cin>>b[i];
		c[b[i]]++;
		inb[b[i]]=true;
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(a[i]==b[j]){
				cout<<a[i]<<" ";
				a[i]=0;
				break;
			}
		}
	}
	cout<<endl;
	for(int i=1;i<=1000;i++){
		if(c[i]) cout<<i<<" ";
	}
	cout<<endl;
	for(int i=1;i<=n;i++){
		int x=a[i];
		if(x&&!inb[i]) d[a[i]]=a[i];
	}
	for(int i=1;i<=1000;i++){
		if(d[i]) cout<<i<<" ";
	}
}
/**************************************************************
	Problem: 1852
	User: wangyiyang
	Language: C++
	Result: Runtime Error
****************************************************************/