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