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