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