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