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