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