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