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