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