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