#include <bits/stdc++.h>
using namespace std;

map<string,int> m = {
    {"G",0},
    {"P",0},
    {"L",0},
    {"T",0}
};
int main(){
string str;
cin>>str;
    for(int i=0;i<str.size();i++){
        if(str[i]=='G'||str[i]=='g')m["G"]++;//在做字符串的某个字符的判断时，用的是字符类型char判断所以用''
        if(str[i]=='P'||str[i]=='p')m["P"]++;
        if(str[i]=='L'||str[i]=='l')m["L"]++;
        if(str[i]=='T'||str[i]=='t')m["T"]++;

    }

    while(m["G"]!=0||m["P"]!=0||m["L"]!=0||m["T"]!=0){
        if(m["G"]!=0){
            cout<<"G";
            m["G"]--;
        }
        if(m["P"]!=0){
            cout<<"P";
            m["P"]--;
        }
        if(m["L"]!=0){
            cout<<"L";
            m["L"]--;
        }
        if(m["T"]!=0){
            cout<<"T";
            m["T"]--;
        }

    }
    return 0;
}