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