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