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