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