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