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