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