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