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