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