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