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