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