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