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