func_code_string: #include <bits/stdc++.h>   using namespace std;      typedef long long int ll;   #define M 1000000007      int main() {       std::ios_base::sync_with_stdio(false);       cin.tie(NULL);       cout.tie(NULL);              int t;       cin>>t;       while(t--)       {           string s;           cin>>s;           for(int i=0; i<s.length(); i++)           {               if(i%2==0)               {                   if(s[i] !=  a )                       s[i] =  a ;                   else                       s[i] =  b ;               }               else               {                   if(s[i] !=  z )                       s[i] =  z ;                   else                       s[i] =  y ;               }           }           cout<<s<<endl;       }    return 0;   }   