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