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