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