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