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