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