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