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