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