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