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