#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

void read(vector<string> & s) {
	int n;
	cin >> n >> ws;
	s.resize(n);
	for (int i = 0; i < n; ++i)
		getline(cin, s[i]);
}

void write(const vector<string> & s) {
	cout << s.size() << "\n";
	for (int i = 0; i < s.size(); ++i)
		cout << s[i] << "\n";
}

int main() {
	vector<string> s1, s2;
	read(s1); read(s2);
	random_shuffle(s1.begin(), s1.end());
	random_shuffle(s2.begin(), s2.end());
	write(s1); write(s2);
	return 0;
}