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