/*
ID: espr1t
TASK: 
KEYWORDS: 
*/

#include <cstdio>
#include <cstring>
#include <algorithm>
#include <vector>
#include <string>

using namespace std;
FILE *in; FILE *out;

const int MAX = 1024;

int main(void) {
	in = stdin; out = stdout;
	in = fopen("symbol.in", "rt"); out = fopen("symbol.out", "wt");
	
	vector < pair <int, char> > v;
	for (int i = 0; i < 5; i++) {
	    int num;
	    char buff[32];
	    fscanf(in, "%d %s", &num, buff);
	    v.push_back(make_pair(num, buff[0]));
    }
    sort(v.begin(), v.end());
    for (int i = 0; i < (int)v.size(); i++) {
        for (int c = 0; c < (int)v[i].first; c++)
            fprintf(out, "%c", v[i].second);
        fprintf(out, "\n");
    }
	
	return 0;
}