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