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