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