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