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