#include <iostream>
#include <string>
#include <cctype>
#include <algorithm>
using namespace std;
int main( ) {
string input;
getline( cin , input ) ;
stable_sort( input.begin ( ) , input.end ( ) ,
[ ] ( char c1, char c2 )
{
return isalpha ( c1 ) && ! isalpha ( c2 ) ;
} ) ;
cout << input;
return 0 ;
}
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stdin
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stdout
LoremipsumdolorsitametconsecteturadipiscingelitDonecadiamlectusSedsitametipsummaurisMaecenascongueligulaacquamviverranecconsecteturantehendreritDonecetmollisdolorPraesentetdiamegetliberoegestasmattissitametvitaeaugueNamtinciduntcongueenimutportaloremlaciniaconsecteturDonecutliberosedarcuvehiculaultriciesanontortorLoremipsumdolorsitametconsecteturadipiscingelitAeneanutgravidaloremUtturpisfelispulvinarasempersedadipiscingiddolorPellentesqueauctornisiidmagnaconsequatsagittisCurabiturdapibusenimsitametelitpharetratinciduntfeugiatnislimperdietUtconvallisliberoinurnaultricesaccumsanDonecsedodioerosDonecviverramiquisquampulvinaratmalesuadaarcurhoncusCumsociisnatoquepenatibusetmagnisdisparturientmontesnasceturridiculusmusInrutrumaccumsanultriciesMaurisvitaenisiatsemfacilisissemperacinest , . . . . . . , . . , . . , , . . . . . . , . . .