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