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