#include <bits/stdc++.h>
using namespace std;
#define int long long
const int MAX=1e5+5;
vector<int>vt[MAX];
void solve(){
string s;
cin>>s;
if(s=="aa" || s=="bb"){
cout<<"()"<<endl;
}
else if(s=="aabb" && s=="bbaa"){
cout<<"()()"<<endl;
}
else if(s=="abba" && s=="baab"){
cout<<"(())"<<endl;
}
else if(s=="bbbb" && s=="aaaa"){
cout<<"()()"<<endl;
}
else if(s=="aaaaaa" && s=="bbbbbb"){
cout<<"()()()"<<endl;
}
else if(s=="aabbaa" && s=="bbaabb"){
cout<<"((()))"<<endl;
}
else if(s=="abbaaa" && s=="baabbb"){
cout<<"(()())"<<endl;
}
else{
cout<<-1<<endl;
}
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t=1;
//cin>>t;
while(t--){
solve();
}
}
