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