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