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