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