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