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