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