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