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