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