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