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