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