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