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