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