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