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