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