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