Your goal is to find the secret four-color code. The following colors are possible: green, pink, yellow, brown, purple, white.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['yellow', 'pink', 'white', 'green']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['green', 'green', 'pink', 'brown']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['pink', 'brown', 'green', 'yellow']. Hint: three colors are in the correct positions.
A B C D
green, pink, brown, brown white, green, white, brown pink, brown, green, white pink, yellow, purple, pink