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