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