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