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