#include <iostream>
#include <string>
#include <vector>

using namespace std;

bool isForw(vector<string> & a, string& w, int start) {
	for (int i = start; i<a.size()  ; i++ ) {
		if (w == a[i]) return true;
	}
	return false;
}

void merge (vector<string> & a, vector<string> & b) {

	
	int ai = 0, bi = 0;
	while(true) {
	
		if (a[ai] == b[bi]) {
			cout << a[ai] << " ";
			ai++;
			bi++;
		}
		
		else {
		
			if (a[ai] < b[bi] && !isForw(b, a[ai], bi) ) {
				cout << a[ai++] << " ";
			}
			if (a[ai] < b[bi] && isForw(b, a[ai], bi) ) {
				cout << b[bi++] << " ";
			}
			if (a[ai] > b[bi] && !isForw(a, b[bi], ai) ) {
				cout << b[bi++] << " ";
			}
			if (a[ai] > b[bi] && isForw(a, b[bi], ai) ) {
				cout << a[ai++] << " ";
			}		
	
		}
		
		if (ai == a.size()) {
			for (int i = bi; i< b.size(); i++) {
				cout << b[i] << " ";
			}
			break;
		}
		if (bi == b.size()) {
			for (int i = ai; i < a.size(); i++) {
				cout << a[i] << " ";
			}
			break;
		}
	}
	cout << "." << endl;


}


int main () {
		
	while (true) { //hlavni
		vector <string> a;
		vector <string> b;

		string tmp;
		cin >> tmp;
		if (tmp == ".") break;
		a.push_back(tmp);
		
		while (true) { // radek
			string tmp;
			cin >> tmp;
			if (tmp == ".") break;
			a.push_back(tmp);
		}
		while (true) { // radek
			string tmp;
			cin >> tmp;
			if (tmp == ".") break;
			b.push_back(tmp);
		}
	
	
		merge(a,b);
	
	
	}	




	return 0;
}