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