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