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