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