#include <iostream>
#include <utility>
#include <algorithm>
#include <fstream>
using namespace std;
int main ( ) {
	pair <int, char> symbols[5];
	int k, i, j;
	char c;
	ofstream smart;

	smart.open ("symbol.out", ios::out|ios::trunc);
	for (i=0;i<5;i++)
		{
		cin >> k >> c;
		cin.ignore ();
		symbols[i].first=k;
		symbols[i].second=c;
		}
	sort (symbols, symbols+5);
	for (i=0;i<5;i++)
		{
		for (j=0;j<symbols[i].first;j++) smart << symbols[i].second;
		smart << endl;
		}
    smart.close ();
	return 0;
}