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