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