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