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