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