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