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