#include <bits/stdc++.h>
char s[220000];
int main(void) {
  scanf("%s", &s);
  int n = strlen(s);
  for (int i = 1; i <= n; i++) {
    if (s[i - 1] == s[i]) {
      if (s[i - 1] != 'c' && s[i + 1] != 'c')
        s[i] = 'c';
      else if (s[i - 1] != 'b' && s[i + 1] != 'b')
        s[i] = 'b';
      else
        s[i] = 'a';
    }
  }
  printf("%s\n", s);
  return 0;
}
