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