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