#include
#include
#include
using namespace std;
int main()
{ string str;
getline(cin, str);
for (int i = 1; i < str.length(); i++)
{
if (i % 2 == 0)
{ if (str[i] != 'a')
{ str[i] = 'a'; }
if (str[i] != 'b')
{ str[i] = 'b'; }
if (str[i] != 'c')
{ str[i] = 'c'; }
}
}
cout << str << endl; <br>_getch();
return 0;}