#include <iostream>
#include <string>
#include <vector>
#include <sstream>
#include <ctime>
#include <queue>
#include <algorithm>
#include <iomanip>
#include <map>
#include <set>
#include <math.h>
#include <stack>
#include <deque>
#include <numeric>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <bitset>

#define all(v) v.begin(),v.end()
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
const ld eps = 1e-9;

int main()
{
	freopen("symbol.in","r",stdin);
	freopen("symbol.out","w",stdout);
	char buf[512];

	vector<pair<int, char> > out;
	for (int i = 0; i < 5; ++i) {
		fgets(buf, 512, stdin);
		int l;
		char c;
		sscanf(buf,"%d %c", &l,&c);
		out.push_back(make_pair(l,c));
	}
	sort(all(out));
	for (int i=0;i<out.size();++i) {
		for (int j=0;j<out[i].first;++j){
			putchar(out[i].second);
		}
		putchar('\n');
	}

	return 0;
}