#include<algorithm>
using namespace std;
int main(){
string s;
while(getline(cin,s)){
sort(s.begin(),s.end());
cout << s << endl;
}
}
#include<algorithm> using namespace std; int main(){ string s; while(getline(cin,s))" >
#include<algorithm>
using namespace std;
int main(){
string s;
while(getline(cin,s)){
sort(s.begin(),s.end());
cout << s << endl;
}
}