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