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