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