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