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