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