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