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