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