#include<iostream>
#include<fstream>
#include<algorithm>
using namespace std;

void input()
{
    freopen("symbol.in","r",stdin);
    freopen("symbol.out","w",stdout);
}

struct s
{
    int t;
    char c;
};

s a[5];
bool srt(s x, s y)
{
    if(x.t==y.t) return x.c<y.c;
    return x.t<y.t;
}
int main()
{
    input();

    for(int i=0;i<5;i++)
    {
        cin>>a[i].t>>a[i].c;

    }
    sort(a,a+5,srt);
    for(int i=0;i<5;i++)
    {
        for(int j=0;j<a[i].t;j++) cout<<a[i].c;
        cout<<endl;
    }
    return 0;
}