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