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