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

int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  string s; cin >> s;
  int ss = s.size();
  for(int i = 0; i < ss; ++i){
    if(s[i] == 'T') s[i] = 'A';
    else if(s[i] == 'C') s[i] = 'B';
    else s[i] = 'C';
  }
  sort(s.begin(), s.end());
  for(int i = 0; i < ss; ++i){
    if(s[i] == 'A') s[i] = 'T';
    else if(s[i] == 'B') s[i] = 'C';
    else s[i] = 'P';
  }
  cout << s;
  
}