#include <fstream>
#include <queue>
using namespace std;

struct str
{
    int c;
    char ch;
};
bool operator<(str a, str b)
{
    if(a.c == b.c) return a.ch > b.ch;
    return a.c > b.c;
}
int main()
{
    ifstream fin("symbol.in");
    ofstream fout("symbol.out");
    priority_queue<str> temp;
    for(int i = 0; i < 5; i ++)
    {
        int a;
        char b;
        fin >> a >> b;
        str tmp;
        tmp.c = a;
        tmp.ch = b;
        temp.push(tmp);
    }
    while(!temp.empty())
    {
        for(int i = 0; i < temp.top().c; i ++)
        {
            fout << temp.top().ch;
        }
        fout << endl;
        temp.pop();
    }
}