#include <string>
#include <iostream>
#include <algorithm>
 
using namespace std;
 
int main(int argc, char** argv) {
    string str;
    cin >> str;
 
    string alph = "AaBbCcDdEe1234567890";
    sort(str.begin(), str.end(), [alph](const char a, const char b)->bool { 
        int first = alph.find(a);
        int second = alph.find(b);
 
        if (first == string::npos)
            return false;
        if (second == string::npos)
            return true;
 
        return first < second;
    });
 
    cout << str << endl;
    return 0;
}

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