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