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