Your goal is to find the secret four-color code. The following colors are possible: yellow, red, purple, green, white, black.
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: ['yellow', 'red', 'black', 'green']. Hint: two colors are in the correct positions.
Guess: ['yellow', 'yellow', 'red', 'red']. Hint: none of the guessed colors are present in the secret code.
Guess: ['purple', 'purple', 'white', 'white']. Hint: one color is in the correct position and one color is in the secret code but in the wrong position.
Guess: ['purple', 'white', 'black', 'green']. 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
white, purple, black, green red, black, black, purple white, yellow, black, yellow white, white, white, white