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