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