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