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