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