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