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