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