#include<iostream>#include<string>usingnamespace std;intmain(){
string s ="";
cin >> s;int n =0;int number[4];char result[4]={'G','P','L','T'};for(int i =0; i <4; i++){
number[i]=0;}char c;
c = s[0];while(c){switch(c){case'G':case'g':
number[0]++;break;case'P':case'p':
number[1]++;break;case'L':case'l':
number[2]++;break;case'T':case't':
number[3]++;break;default:break;}
n++;
c = s[n];}
n =1;while(n){
n =0;for(int i =0; i <4; i++){if(number[i]){
cout << result[i];
n =1;
number[i]--;}}}}