#include <iostream>
#include <algorithm>
using namespace std;
using ll = long long;

string S;
int main(void){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	cin >> S;
	bool f = false;
	for(char c : S)if(c == 'C')f = true;
	sort(S.begin(), S.end(), [](char a, char b){
		if(a == 'T' && b == 'C'){
			return 1;
		}
		if(a == 'C' && b == 'P'){
			return 1;
		}
		if(a == 'T' && b == 'P'){
			return 1;
		}
		return 0;
	});
	if(f){
		cout << S << endl;
	}else{
		reverse(S.begin(), S.end());
		cout << S << endl;
	}
	return 0;
}