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