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