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