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