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