#include <bits/stdc++.h>
using namespace std;
int main () {
	string s;
	cin >> s;
	auto D = [](char c) {
		return (c == 'T' ? 0 : (c == 'C' ? 1 : 2));
	};
	sort(s.begin(), s.end(), [&](char a, char b){return D(a) < D(b);});
	cout << s << endl;
}