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