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