Your goal is to find the secret four-color code. The following colors are possible: brown, purple, pink, white, blue, 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: ['brown', 'purple', 'white', 'black']. Hint: two colors are in the correct positions.
Guess: ['brown', 'brown', 'purple', 'purple']. Hint: one color is in the correct position.
Guess: ['pink', 'blue', 'pink', 'black']. 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
brown, purple, purple, white white, purple, brown, pink black, purple, black, black brown, pink, blue, black