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