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