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