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