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