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