Derived from problem 2440.

A string containing several sentences are given as input. If any sentence contains the word 'great' more than twice, replace every second 'great' of that sentence with the word 'awesome'.

Example:

Input = 'Sheldon, Penny, Leonard and Raj are great and great and great and great receptively. Wolowitz is just a great jerk';

Output = 'Sheldon, Penny, Leonard and Raj are great and awesome and great and awesome receptively. Wolowitz is just a great jerk';