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