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

int main (){
    string s;
    cin >> s;
    transform(s.begin(), s.end(),s.begin() ,::tolower);
    int index = s.find("tantan", index);
    if(index == -1){
        cout << "not find" << endl;
        return 0;
    }

    while(index != -1){
        s.replace(index, 6, "baibai");
        index = s.find("tantan", index);
    }
    cout << s << endl;
    return 0;
}