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