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