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