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