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