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