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