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