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