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