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