#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  string s;
  cin >> s;
  int n = s.length();
  for (int i = 1; i < n; i++) {
    if (s[i] == s[i - 1]) {
      s[i] = 'a';
      if (s[i] == s[i - 1]) s[i] = 'b';
      if (i < n - 1 && s[i] == s[i + 1]) s[i] = 'c';
      if (s[i] == s[i - 1]) s[i] = 'd';
    }
  }
  cout << s << endl;
}
