Your goal is to find the secret four-color code. The following colors are possible: brown, white, red, pink, yellow, black.
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: ['black', 'red', 'yellow', 'pink']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['brown', 'pink', 'black', 'black']. Hint: two colors are in the correct positions.
Guess: ['white', 'pink', 'red', 'black']. Hint: two colors are in the secret code but in the wrong positions.
A B C D
black, red, brown, brown white, white, red, yellow yellow, black, black, brown brown, yellow, black, red