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